55887685408 has 24 divisors (see below), whose sum is σ = 113002636572. Its totient is φ = 27188603136.

The previous prime is 55887685397. The next prime is 55887685409. The reversal of 55887685408 is 80458678855.

It can be written as a sum of positive squares in 2 ways, for example, as 48176738064 + 7710947344 = 219492^2 + 87812^2 .

It is a super-2 number, since 2×55887685408² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55887685408.

It is not an unprimeable number, because it can be changed into a prime (55887685409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23600035 + ... + 23602402.

Almost surely, 2^55887685408 is an apocalyptic number.

It is an amenable number.

55887685408 is an abundant number, since it is smaller than the sum of its proper divisors (57114951164).

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

55887685408 is a wasteful number, since it uses less digits than its factorization.

55887685408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47202484 (or 47202476 counting only the distinct ones).

The product of its (nonzero) digits is 86016000, while the sum is 64.

The spelling of 55887685408 in words is "fifty-five billion, eight hundred eighty-seven million, six hundred eighty-five thousand, four hundred eight".