78588864387572 has 24 divisors (see below), whose sum is σ = 171466613209920. Its totient is φ = 30619038072960.

The previous prime is 78588864387571. The next prime is 78588864387617. The reversal of 78588864387572 is 27578346888587.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78588864387571) 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, 127579324997 + ... + 127579325612.

It is an arithmetic number, because the mean of its divisors is an integer number (7144442217080).

Almost surely, 2^{78588864387572} is an apocalyptic number.

It is an amenable number.

78588864387572 is an abundant number, since it is smaller than the sum of its proper divisors (92877748822348).

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

78588864387572 is a wasteful number, since it uses less digits than its factorization.

78588864387572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255158650631 (or 255158650629 counting only the distinct ones).

The product of its digits is 40461926400, while the sum is 86.

The spelling of 78588864387572 in words is "seventy-eight trillion, five hundred eighty-eight billion, eight hundred sixty-four million, three hundred eighty-seven thousand, five hundred seventy-two".