78886765401400 has 96 divisors (see below), whose sum is σ = 201203320377600. Its totient is φ = 28525838844800.

The previous prime is 78886765401359. The next prime is 78886765401473. The reversal of 78886765401400 is 410456768887.

It is a congruent number.

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, 99767152 + ... + 100554751.

It is an arithmetic number, because the mean of its divisors is an integer number (2095867920600).

Almost surely, 2^{78886765401400} is an apocalyptic number.

It is an amenable number.

78886765401400 is an abundant number, since it is smaller than the sum of its proper divisors (122316554976200).

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

78886765401400 is a wasteful number, since it uses less digits than its factorization.

78886765401400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200322109 (or 200322100 counting only the distinct ones).

The product of its (nonzero) digits is 72253440, while the sum is 64.

The spelling of 78886765401400 in words is "seventy-eight trillion, eight hundred eighty-six billion, seven hundred sixty-five million, four hundred one thousand, four hundred".