79887197040 has 160 divisors (see below), whose sum is σ = 288805324800. Its totient is φ = 18259911936.

The previous prime is 79887197017. The next prime is 79887197077. The reversal of 79887197040 is 4079178897.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 402904 + ... + 567543.

It is an arithmetic number, because the mean of its divisors is an integer number (1805033280).

Almost surely, 2^79887197040 is an apocalyptic number.

79887197040 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

79887197040 is an abundant number, since it is smaller than the sum of its proper divisors (208918127760).

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

79887197040 is a wasteful number, since it uses less digits than its factorization.

79887197040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970484 (or 970464 counting only the distinct ones).

The product of its (nonzero) digits is 7112448, while the sum is 60.

The spelling of 79887197040 in words is "seventy-nine billion, eight hundred eighty-seven million, one hundred ninety-seven thousand, forty".