61572488684 has 24 divisors (see below), whose sum is σ = 123175395840. Its totient is φ = 26381691216.

The previous prime is 61572488651. The next prime is 61572488687. The reversal of 61572488684 is 48688427516.

61572488684 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (61572488687) 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, 155342 + ... + 383765.

It is an arithmetic number, because the mean of its divisors is an integer number (5132308160).

Almost surely, 2^61572488684 is an apocalyptic number.

It is an amenable number.

61572488684 is an abundant number, since it is smaller than the sum of its proper divisors (61602907156).

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

61572488684 is a wasteful number, since it uses less digits than its factorization.

61572488684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543197 (or 543195 counting only the distinct ones).

The product of its digits is 20643840, while the sum is 59.

The spelling of 61572488684 in words is "sixty-one billion, five hundred seventy-two million, four hundred eighty-eight thousand, six hundred eighty-four".