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105239188801 = 193871542831
BaseRepresentation
bin110001000000010111…
…1101001010101000001
3101001122022002201011101
41202000233221111001
53211012213020201
6120202441014401
710413632226265
oct1420057512501
9331568081141
10105239188801
11406a48621aa
1218490484401
139c02096b66
145144bc60a5
152b0e18bd01
hex1880be9541

105239188801 has 4 divisors (see below), whose sum is σ = 105239925504. Its totient is φ = 105238452100.

The previous prime is 105239188781. The next prime is 105239188807. The reversal of 105239188801 is 108881932501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 108881932501 = 223488259787.

It is a cyclic number.

It is not a de Polignac number, because 105239188801 - 29 = 105239188289 is a prime.

It is a super-2 number, since 2×1052391888012 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105239188807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77545 + ... + 465286.

It is an arithmetic number, because the mean of its divisors is an integer number (26309981376).

Almost surely, 2105239188801 is an apocalyptic number.

It is an amenable number.

105239188801 is a deficient number, since it is larger than the sum of its proper divisors (736703).

105239188801 is an equidigital number, since it uses as much as digits as its factorization.

105239188801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736702.

The product of its (nonzero) digits is 138240, while the sum is 46.

The spelling of 105239188801 in words is "one hundred five billion, two hundred thirty-nine million, one hundred eighty-eight thousand, eight hundred one".

Divisors: 1 193871 542831 105239188801