79641257384 has 16 divisors (see below), whose sum is σ = 160814077620. Its totient is φ = 36757503360.

The previous prime is 79641257383. The next prime is 79641257387. The reversal of 79641257384 is 48375214697.

It can be written as a sum of positive squares in 2 ways, for example, as 63868409284 + 15772848100 = 252722^2 + 125590^2 .

It is not an unprimeable number, because it can be changed into a prime (79641257383) 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, 382890557 + ... + 382890764.

Almost surely, 2^79641257384 is an apocalyptic number.

It is an amenable number.

79641257384 is an abundant number, since it is smaller than the sum of its proper divisors (81172820236).

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

79641257384 is a wasteful number, since it uses less digits than its factorization.

79641257384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765781340 (or 765781336 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 56.

The spelling of 79641257384 in words is "seventy-nine billion, six hundred forty-one million, two hundred fifty-seven thousand, three hundred eighty-four".