55859377395855 has 64 divisors (see below), whose sum is σ = 97916988298752. Its totient is φ = 26967664765440.

The previous prime is 55859377395779. The next prime is 55859377395869.

It is a happy number.

55859377395855 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55859377395855 - 2⁹ = 55859377395343 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 55728489 + ... + 56721981.

It is an arithmetic number, because the mean of its divisors is an integer number (1529952942168).

Almost surely, 2^{55859377395855} is an apocalyptic number.

55859377395855 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55859377395855 is a deficient number, since it is larger than the sum of its proper divisors (42057610902897).

55859377395855 is a wasteful number, since it uses less digits than its factorization.

55859377395855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994968.

The product of its digits is 35721000000, while the sum is 84.

The spelling of 55859377395855 in words is "fifty-five trillion, eight hundred fifty-nine billion, three hundred seventy-seven million, three hundred ninety-five thousand, eight hundred fifty-five".