79020408240 has 60 divisors (see below), whose sum is σ = 265376873424. Its totient is φ = 21072108672.

The previous prime is 79020408209. The next prime is 79020408263. The reversal of 79020408240 is 4280402097.

79020408240 is a `hidden beast` number, since 7 + 9 + 0 + 2 + 0 + 408 + 240 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 79020408195 and 79020408204.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54874564 + ... + 54876003.

Almost surely, 2^79020408240 is an apocalyptic number.

It is an amenable number.

79020408240 is an abundant number, since it is smaller than the sum of its proper divisors (186356465184).

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

79020408240 is a wasteful number, since it uses less digits than its factorization.

79020408240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109750586 (or 109750577 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The spelling of 79020408240 in words is "seventy-nine billion, twenty million, four hundred eight thousand, two hundred forty".