55506476775636 has 18 divisors (see below), whose sum is σ = 140308038516282. Its totient is φ = 18502158925200.

The previous prime is 55506476775583. The next prime is 55506476775641. The reversal of 55506476775636 is 63657767460555.

55506476775636 is a `hidden beast` number, since 5 + 5 + 5 + 0 + 6 + 476 + 77 + 56 + 36 = 666.

It can be written as a sum of positive squares in only one way, i.e., 47620433371536 + 7886043404100 = 6900756^2 + 2808210^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 770923288515 + ... + 770923288586.

Almost surely, 2^{55506476775636} is an apocalyptic number.

It is an amenable number.

55506476775636 is an abundant number, since it is smaller than the sum of its proper divisors (84801561740646).

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

55506476775636 is a wasteful number, since it uses less digits than its factorization.

55506476775636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1541846577111 (or 1541846577106 counting only the distinct ones).

The product of its (nonzero) digits is 3333960000, while the sum is 72.

The spelling of 55506476775636 in words is "fifty-five trillion, five hundred six billion, four hundred seventy-six million, seven hundred seventy-five thousand, six hundred thirty-six".