76431206656 has 108 divisors (see below), whose sum is σ = 182269892028. Its totient is φ = 31870734336.

The previous prime is 76431206641. The next prime is 76431206659. The reversal of 76431206656 is 65660213467.

It can be written as a sum of positive squares in 2 ways, for example, as 67516825600 + 8914381056 = 259840^2 + 94416^2 .

It is not an unprimeable number, because it can be changed into a prime (76431206659) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 381790 + ... + 546466.

Almost surely, 2^76431206656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 76431206656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91134946014).

76431206656 is an abundant number, since it is smaller than the sum of its proper divisors (105838685372).

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

76431206656 is a wasteful number, since it uses less digits than its factorization.

76431206656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164744 (or 164723 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 46.

The spelling of 76431206656 in words is "seventy-six billion, four hundred thirty-one million, two hundred six thousand, six hundred fifty-six".