55887511680 has 1536 divisors, whose sum is σ = 269460172800. Its totient is φ = 10689822720.

The previous prime is 55887511661. The next prime is 55887511697. The reversal of 55887511680 is 8611578855.

55887511680 is a `hidden beast` number, since 5 + 588 + 7 + 51 + 1 + 6 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 155675341 + ... + 155675699.

It is an arithmetic number, because the mean of its divisors is an integer number (175429800).

Almost surely, 2^55887511680 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 55887511680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134730086400).

55887511680 is an abundant number, since it is smaller than the sum of its proper divisors (213572661120).

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

55887511680 is a wasteful number, since it uses less digits than its factorization.

55887511680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424 (or 400 counting only the distinct ones).

The product of its (nonzero) digits is 2688000, while the sum is 54.

The spelling of 55887511680 in words is "fifty-five billion, eight hundred eighty-seven million, five hundred eleven thousand, six hundred eighty".