55995407403840 has 896 divisors, whose sum is σ = 208431935078400. Its totient is φ = 14132610293760.

The previous prime is 55995407403839. The next prime is 55995407403893. The reversal of 55995407403840 is 4830470459955.

55995407403840 is a `hidden beast` number, since 5 + 5 + 9 + 9 + 540 + 7 + 4 + 0 + 3 + 84 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3113095327 + ... + 3113113313.

Almost surely, 2^{55995407403840} 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 55995407403840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104215967539200).

55995407403840 is an abundant number, since it is smaller than the sum of its proper divisors (152436527674560).

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

55995407403840 is a wasteful number, since it uses less digits than its factorization.

55995407403840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18300 (or 18284 counting only the distinct ones).

The product of its (nonzero) digits is 108864000, while the sum is 63.

The spelling of 55995407403840 in words is "fifty-five trillion, nine hundred ninety-five billion, four hundred seven million, four hundred three thousand, eight hundred forty".