55732686806544 has 160 divisors (see below), whose sum is σ = 157407124346880. Its totient is φ = 16851914956800.

The previous prime is 55732686806521. The next prime is 55732686806569. The reversal of 55732686806544 is 44560868623755.

It is a super-2 number, since 2×55732686806544² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 704020437 + ... + 704099595.

It is an arithmetic number, because the mean of its divisors is an integer number (983794527168).

Almost surely, 2^{55732686806544} 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 55732686806544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78703562173440).

55732686806544 is an abundant number, since it is smaller than the sum of its proper divisors (101674437540336).

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

55732686806544 is a wasteful number, since it uses less digits than its factorization.

55732686806544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82069 (or 82063 counting only the distinct ones).

The product of its (nonzero) digits is 1161216000, while the sum is 69.

The spelling of 55732686806544 in words is "fifty-five trillion, seven hundred thirty-two billion, six hundred eighty-six million, eight hundred six thousand, five hundred forty-four".