78324929672 has 16 divisors (see below), whose sum is σ = 160210083600. Its totient is φ = 35602240720.

The previous prime is 78324929663. The next prime is 78324929689. The reversal of 78324929672 is 27692942387.

It is a happy number.

It is a super-2 number, since 2×78324929672² (a number of 23 digits) contains 22 as substring.

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, 445027922 + ... + 445028097.

It is an arithmetic number, because the mean of its divisors is an integer number (10013130225).

Almost surely, 2^78324929672 is an apocalyptic number.

It is an amenable number.

78324929672 is an abundant number, since it is smaller than the sum of its proper divisors (81885153928).

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

78324929672 is a wasteful number, since it uses less digits than its factorization.

78324929672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890056036 (or 890056032 counting only the distinct ones).

The product of its digits is 18289152, while the sum is 59.

The spelling of 78324929672 in words is "seventy-eight billion, three hundred twenty-four million, nine hundred twenty-nine thousand, six hundred seventy-two".