55605550000056 has 32 divisors (see below), whose sum is σ = 158873000000640. Its totient is φ = 15887299999968.

The previous prime is 55605549999971. The next prime is 55605550000081. The reversal of 55605550000056 is 65000005550655.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 55605549999972 and 55605550000017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165492708166 + ... + 165492708501.

It is an arithmetic number, because the mean of its divisors is an integer number (4964781250020).

Almost surely, 2^{55605550000056} is an apocalyptic number.

55605550000056 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

55605550000056 is an abundant number, since it is smaller than the sum of its proper divisors (103267450000584).

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

55605550000056 is a wasteful number, since it uses less digits than its factorization.

55605550000056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330985416683 (or 330985416679 counting only the distinct ones).

The product of its (nonzero) digits is 562500, while the sum is 42.

The spelling of 55605550000056 in words is "fifty-five trillion, six hundred five billion, five hundred fifty million, fifty-six", and thus it is an aban number.