78740396572 has 12 divisors (see below), whose sum is σ = 137822648320. Its totient is φ = 39362497056.

The previous prime is 78740396549. The next prime is 78740396617. The reversal of 78740396572 is 27569304787.

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

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, 1902273 + ... + 1943224.

Almost surely, 2^78740396572 is an apocalyptic number.

It is an amenable number.

78740396572 is a deficient number, since it is larger than the sum of its proper divisors (59082251748).

78740396572 is a wasteful number, since it uses less digits than its factorization.

78740396572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3850620 (or 3850618 counting only the distinct ones).

The product of its (nonzero) digits is 17781120, while the sum is 58.

The spelling of 78740396572 in words is "seventy-eight billion, seven hundred forty million, three hundred ninety-six thousand, five hundred seventy-two".