55056657661660 has 48 divisors (see below), whose sum is σ = 120648054191616. Its totient is φ = 21064778678592.

The previous prime is 55056657661657. The next prime is 55056657661699. The reversal of 55056657661660 is 6616675665055.

It is a junction number, because it is equal to n+sod(n) for n = 55056657661592 and 55056657661601.

It is a congruent number.

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, 25345639 + ... + 27432001.

It is an arithmetic number, because the mean of its divisors is an integer number (2513501128992).

Almost surely, 2^{55056657661660} is an apocalyptic number.

It is an amenable number.

55056657661660 is an abundant number, since it is smaller than the sum of its proper divisors (65591396529956).

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

55056657661660 is a wasteful number, since it uses less digits than its factorization.

55056657661660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143762 (or 2143760 counting only the distinct ones).

The product of its (nonzero) digits is 204120000, while the sum is 64.

The spelling of 55056657661660 in words is "fifty-five trillion, fifty-six billion, six hundred fifty-seven million, six hundred sixty-one thousand, six hundred sixty".