78497275365 has 48 divisors (see below), whose sum is σ = 144103534848. Its totient is φ = 40974434496.

The previous prime is 78497275357. The next prime is 78497275397. The reversal of 78497275365 is 56357279487.

78497275365 is a `hidden beast` number, since 7 + 8 + 4 + 97 + 2 + 7 + 536 + 5 = 666.

It is not a de Polignac number, because 78497275365 - 2³ = 78497275357 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 630202 + ... + 744411.

It is an arithmetic number, because the mean of its divisors is an integer number (3002156976).

Almost surely, 2^78497275365 is an apocalyptic number.

It is an amenable number.

78497275365 is a deficient number, since it is larger than the sum of its proper divisors (65606259483).

78497275365 is a wasteful number, since it uses less digits than its factorization.

78497275365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374680 (or 1374668 counting only the distinct ones).

The product of its digits is 88905600, while the sum is 63.

The spelling of 78497275365 in words is "seventy-eight billion, four hundred ninety-seven million, two hundred seventy-five thousand, three hundred sixty-five".