78971629264 has 40 divisors (see below), whose sum is σ = 167839570080. Its totient is φ = 35697859200.

The previous prime is 78971629199. The next prime is 78971629309. The reversal of 78971629264 is 46292617987.

It is a super-2 number, since 2×78971629264² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1207654 + ... + 1271365.

It is an arithmetic number, because the mean of its divisors is an integer number (4195989252).

Almost surely, 2^78971629264 is an apocalyptic number.

It is an amenable number.

78971629264 is an abundant number, since it is smaller than the sum of its proper divisors (88867940816).

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

78971629264 is a wasteful number, since it uses less digits than its factorization.

78971629264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2479219 (or 2479213 counting only the distinct ones).

The product of its digits is 18289152, while the sum is 61.

The spelling of 78971629264 in words is "seventy-eight billion, nine hundred seventy-one million, six hundred twenty-nine thousand, two hundred sixty-four".