79992000040 has 32 divisors (see below), whose sum is σ = 181633221000. Its totient is φ = 31703249664.

The previous prime is 79992000037. The next prime is 79992000059. The reversal of 79992000040 is 4000029997.

It can be written as a sum of positive squares in 4 ways, for example, as 79500313764 + 491686276 = 281958^2 + 22174^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 79991999957 and 79992000002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9169035 + ... + 9177754.

Almost surely, 2^79992000040 is an apocalyptic number.

It is an amenable number.

79992000040 is an abundant number, since it is smaller than the sum of its proper divisors (101641220960).

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

79992000040 is a wasteful number, since it uses less digits than its factorization.

79992000040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18346909 (or 18346905 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 40.

The spelling of 79992000040 in words is "seventy-nine billion, nine hundred ninety-two million, forty", and thus it is an aban number.