Search a number
-
+
13131242434400 = 255216414053043
BaseRepresentation
bin1011111100010101101100…
…0010100110111101100000
31201111100000212021222111012
42333011123002212331200
53210120241030400100
643532224241240052
72523462300031436
oct277053302467540
951440025258435
1013131242434400
114202a24029212
121580b0a633028
1374336a09101c
143357ac508d56
1517b891619135
hexbf15b0a6f60

13131242434400 has 36 divisors (see below), whose sum is σ = 32056645594932. Its totient is φ = 5252496973440.

The previous prime is 13131242434391. The next prime is 13131242434403. The reversal of 13131242434400 is 443424213131.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131242434403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8207025722 + ... + 8207027321.

It is an arithmetic number, because the mean of its divisors is an integer number (890462377637).

Almost surely, 213131242434400 is an apocalyptic number.

13131242434400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13131242434400 is an abundant number, since it is smaller than the sum of its proper divisors (18925403160532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13131242434400 is a wasteful number, since it uses less digits than its factorization.

13131242434400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16414053063 (or 16414053050 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 13131242434400 its reverse (443424213131), we get a palindrome (13574666647531).

The spelling of 13131242434400 in words is "thirteen trillion, one hundred thirty-one billion, two hundred forty-two million, four hundred thirty-four thousand, four hundred".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 80 100 160 200 400 800 16414053043 32828106086 65656212172 82070265215 131312424344 164140530430 262624848688 328281060860 410351326075 525249697376 656562121720 820702652150 1313124243440 1641405304300 2626248486880 3282810608600 6565621217200 13131242434400