78564025488 has 80 divisors (see below), whose sum is σ = 231426187776. Its totient is φ = 22751569920.

The previous prime is 78564025457. The next prime is 78564025489. The reversal of 78564025488 is 88452046587.

It is a super-2 number, since 2×78564025488² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78564025489) 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, 3692448 + ... + 3713663.

Almost surely, 2^78564025488 is an apocalyptic number.

78564025488 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

78564025488 is an abundant number, since it is smaller than the sum of its proper divisors (152862162288).

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

78564025488 is a wasteful number, since it uses less digits than its factorization.

78564025488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7406152 (or 7406146 counting only the distinct ones).

The product of its (nonzero) digits is 17203200, while the sum is 57.

The spelling of 78564025488 in words is "seventy-eight billion, five hundred sixty-four million, twenty-five thousand, four hundred eighty-eight".