Search a number
-
+
6885803436660 = 22325178929386293
BaseRepresentation
bin110010000110011100111…
…0111100010101001110100
3220101021110110222111100100
41210030321313202221310
51400304111134433120
622351143332514100
71310324425331211
oct144147167425164
926337413874310
106885803436660
112215286589075
1293262177b930
133ac436887065
1419b3bb972b08
15be1aeea5490
hex64339de2a74

6885803436660 has 288 divisors, whose sum is σ = 22440658050720. Its totient is φ = 1702931890176.

The previous prime is 6885803436623. The next prime is 6885803436671. The reversal of 6885803436660 is 666343085886.

It can be written as a sum of positive squares in 16 ways, for example, as 1900791630864 + 4985011805796 = 1378692^2 + 2232714^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 79752474 + ... + 79838766.

It is an arithmetic number, because the mean of its divisors is an integer number (77918951565).

Almost surely, 26885803436660 is an apocalyptic number.

6885803436660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6885803436660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11220329025360).

6885803436660 is an abundant number, since it is smaller than the sum of its proper divisors (15554854614060).

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

6885803436660 is a wasteful number, since it uses less digits than its factorization.

6885803436660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86707 (or 86702 counting only the distinct ones).

The product of its (nonzero) digits is 119439360, while the sum is 63.

The spelling of 6885803436660 in words is "six trillion, eight hundred eighty-five billion, eight hundred three million, four hundred thirty-six thousand, six hundred sixty".