78162518856 has 32 divisors (see below), whose sum is σ = 201709728000. Its totient is φ = 25213715520.

The previous prime is 78162518851. The next prime is 78162518857. The reversal of 78162518856 is 65881526187.

It is a super-2 number, since 2×78162518856² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78162518796 and 78162518805.

It is not an unprimeable number, because it can be changed into a prime (78162518851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52527831 + ... + 52529318.

It is an arithmetic number, because the mean of its divisors is an integer number (6303429000).

Almost surely, 2^78162518856 is an apocalyptic number.

It is an amenable number.

78162518856 is an abundant number, since it is smaller than the sum of its proper divisors (123547209144).

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

78162518856 is a wasteful number, since it uses less digits than its factorization.

78162518856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105057189 (or 105057185 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 57.

The spelling of 78162518856 in words is "seventy-eight billion, one hundred sixty-two million, five hundred eighteen thousand, eight hundred fifty-six".