78287212792 has 16 divisors (see below), whose sum is σ = 150755781960. Its totient is φ = 38085670944.

The previous prime is 78287212789. The next prime is 78287212807. The reversal of 78287212792 is 29721278287.

It is a super-2 number, since 2×78287212792² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132241618 + ... + 132242209.

Almost surely, 2^78287212792 is an apocalyptic number.

It is an amenable number.

78287212792 is a deficient number, since it is larger than the sum of its proper divisors (72468569168).

78287212792 is a wasteful number, since it uses less digits than its factorization.

78287212792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264483870 (or 264483866 counting only the distinct ones).

The product of its digits is 3161088, while the sum is 55.

It can be divided in two parts, 782872 and 12792, that added together give a square (795664 = 892²).

The spelling of 78287212792 in words is "seventy-eight billion, two hundred eighty-seven million, two hundred twelve thousand, seven hundred ninety-two".