78433798572 has 36 divisors (see below), whose sum is σ = 198507754536. Its totient is φ = 26112352320.

The previous prime is 78433798511. The next prime is 78433798589. The reversal of 78433798572 is 27589733487.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1314033 + ... + 1372424.

Almost surely, 2^78433798572 is an apocalyptic number.

It is an amenable number.

78433798572 is an abundant number, since it is smaller than the sum of its proper divisors (120073955964).

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

78433798572 is a wasteful number, since it uses less digits than its factorization.

78433798572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2687278 (or 2687273 counting only the distinct ones).

The product of its digits is 71124480, while the sum is 63.

The spelling of 78433798572 in words is "seventy-eight billion, four hundred thirty-three million, seven hundred ninety-eight thousand, five hundred seventy-two".