797136639456 has 48 divisors (see below), whose sum is σ = 2131964516304. Its totient is φ = 260698773504.

The previous prime is 797136639443. The next prime is 797136639521. The reversal of 797136639456 is 654936631797.

797136639456 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

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, 78329881 + ... + 78340056.

It is an arithmetic number, because the mean of its divisors is an integer number (44415927423).

Almost surely, 2^797136639456 is an apocalyptic number.

It is an amenable number.

797136639456 is an abundant number, since it is smaller than the sum of its proper divisors (1334827876848).

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

797136639456 is a wasteful number, since it uses less digits than its factorization.

797136639456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156670003 (or 156669995 counting only the distinct ones).

The product of its digits is 154314720, while the sum is 66.

The spelling of 797136639456 in words is "seven hundred ninety-seven billion, one hundred thirty-six million, six hundred thirty-nine thousand, four hundred fifty-six".