55551536604 has 108 divisors (see below), whose sum is σ = 143445209544. Its totient is φ = 18126237888.

The previous prime is 55551536567. The next prime is 55551536659. The reversal of 55551536604 is 40663515555.

55551536604 is a `hidden beast` number, since 5 + 5 + 5 + 5 + 1 + 5 + 36 + 604 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 55551536604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 27956499 + ... + 27958485.

Almost surely, 2^55551536604 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 55551536604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71722604772).

55551536604 is an abundant number, since it is smaller than the sum of its proper divisors (87893672940).

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

55551536604 is a wasteful number, since it uses less digits than its factorization.

55551536604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2304 (or 2232 counting only the distinct ones).

The product of its (nonzero) digits is 1350000, while the sum is 45.

The spelling of 55551536604 in words is "fifty-five billion, five hundred fifty-one million, five hundred thirty-six thousand, six hundred four".