78974394232 has 8 divisors (see below), whose sum is σ = 148076989200. Its totient is φ = 39487197112.

The previous prime is 78974394227. The next prime is 78974394253. The reversal of 78974394232 is 23249347987.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×78974394232² (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 as a sum of consecutive naturals, namely, 4935899632 + ... + 4935899647.

It is an arithmetic number, because the mean of its divisors is an integer number (18509623650).

Almost surely, 2^78974394232 is an apocalyptic number.

It is an amenable number.

78974394232 is a deficient number, since it is larger than the sum of its proper divisors (69102594968).

78974394232 is a wasteful number, since it uses less digits than its factorization.

78974394232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9871799285 (or 9871799281 counting only the distinct ones).

The product of its digits is 18289152, while the sum is 58.

The spelling of 78974394232 in words is "seventy-eight billion, nine hundred seventy-four million, three hundred ninety-four thousand, two hundred thirty-two".