55887544578855 has 32 divisors (see below), whose sum is σ = 97554242016000. Its totient is φ = 27095582062080.

The previous prime is 55887544578847. The next prime is 55887544578937.

It is a happy number.

55887544578855 is nontrivially palindromic in base 10.

55887544578855 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55887544578855 - 2³ = 55887544578847 is a prime.

It is a super-2 number, since 2×55887544578855² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5622097 + ... + 11974266.

It is an arithmetic number, because the mean of its divisors is an integer number (3048570063000).

Almost surely, 2^{55887544578855} is an apocalyptic number.

55887544578855 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55887544578855 is a deficient number, since it is larger than the sum of its proper divisors (41666697437145).

55887544578855 is a wasteful number, since it uses less digits than its factorization.

55887544578855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17615631.

The product of its digits is 50176000000, while the sum is 84.

The spelling of 55887544578855 in words is "fifty-five trillion, eight hundred eighty-seven billion, five hundred forty-four million, five hundred seventy-eight thousand, eight hundred fifty-five".