55687189264 has 80 divisors (see below), whose sum is σ = 127997521920. Its totient is φ = 22966784640.

The previous prime is 55687189219. The next prime is 55687189301. The reversal of 55687189264 is 46298178655.

55687189264 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 576687 + ... + 666289.

It is an arithmetic number, because the mean of its divisors is an integer number (1599969024).

Almost surely, 2^55687189264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55687189264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63998760960).

55687189264 is an abundant number, since it is smaller than the sum of its proper divisors (72310332656).

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

55687189264 is a wasteful number, since it uses less digits than its factorization.

55687189264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89828 (or 89822 counting only the distinct ones).

The product of its digits is 29030400, while the sum is 61.

The spelling of 55687189264 in words is "fifty-five billion, six hundred eighty-seven million, one hundred eighty-nine thousand, two hundred sixty-four".