55581602895 has 128 divisors (see below), whose sum is σ = 122546350080. Its totient is φ = 23274501120.

The previous prime is 55581602893. The next prime is 55581602897. The reversal of 55581602895 is 59820618555.

55581602895 is a `hidden beast` number, since 5 + 558 + 1 + 6 + 0 + 2 + 89 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (55581602893) and next prime (55581602897).

It is not a de Polignac number, because 55581602895 - 2¹ = 55581602893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55581602893) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1592067 + ... + 1626603.

It is an arithmetic number, because the mean of its divisors is an integer number (957393360).

Almost surely, 2^55581602895 is an apocalyptic number.

55581602895 is an abundant number, since it is smaller than the sum of its proper divisors (66964747185).

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

55581602895 is a wasteful number, since it uses less digits than its factorization.

55581602895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34702 (or 34696 counting only the distinct ones).

The product of its (nonzero) digits is 4320000, while the sum is 54.

The spelling of 55581602895 in words is "fifty-five billion, five hundred eighty-one million, six hundred two thousand, eight hundred ninety-five".