78316987156 has 48 divisors (see below), whose sum is σ = 142383225600. Its totient is φ = 37647929088.

The previous prime is 78316987153. The next prime is 78316987181. The reversal of 78316987156 is 65178961387.

It is a super-2 number, since 2×78316987156² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78316987094 and 78316987103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78316987153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32946640 + ... + 32949016.

It is an arithmetic number, because the mean of its divisors is an integer number (2966317200).

Almost surely, 2^78316987156 is an apocalyptic number.

It is an amenable number.

78316987156 is a deficient number, since it is larger than the sum of its proper divisors (64066238444).

78316987156 is a wasteful number, since it uses less digits than its factorization.

78316987156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3496 (or 3494 counting only the distinct ones).

The product of its digits is 15240960, while the sum is 61.

The spelling of 78316987156 in words is "seventy-eight billion, three hundred sixteen million, nine hundred eighty-seven thousand, one hundred fifty-six".