78880137640100 has 72 divisors (see below), whose sum is σ = 175360164731136. Its totient is φ = 30779790880000.

The previous prime is 78880137640099. The next prime is 78880137640121. The reversal of 78880137640100 is 104673108887.

78880137640100 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×78880137640100² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46192505 + ... + 47869695.

It is an arithmetic number, because the mean of its divisors is an integer number (2435557843488).

Almost surely, 2^{78880137640100} is an apocalyptic number.

It is an amenable number.

78880137640100 is an abundant number, since it is smaller than the sum of its proper divisors (96480027091036).

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

78880137640100 is a wasteful number, since it uses less digits than its factorization.

78880137640100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1688717 (or 1688710 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 53.

The spelling of 78880137640100 in words is "seventy-eight trillion, eight hundred eighty billion, one hundred thirty-seven million, six hundred forty thousand, one hundred".