55795571865 has 48 divisors (see below), whose sum is σ = 105924926016. Its totient is φ = 26944560000.

The previous prime is 55795571863. The next prime is 55795571879. The reversal of 55795571865 is 56817559755.

55795571865 is a `hidden beast` number, since 5 + 5 + 7 + 9 + 557 + 18 + 65 = 666.

It is not a de Polignac number, because 55795571865 - 2¹ = 55795571863 is a prime.

It is a super-2 number, since 2×55795571865² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55795571863) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 100294 + ... + 348783.

It is an arithmetic number, because the mean of its divisors is an integer number (2206769292).

Almost surely, 2^55795571865 is an apocalyptic number.

55795571865 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55795571865 is a deficient number, since it is larger than the sum of its proper divisors (50129354151).

55795571865 is a wasteful number, since it uses less digits than its factorization.

55795571865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449350 (or 449347 counting only the distinct ones).

The product of its digits is 66150000, while the sum is 63.

The spelling of 55795571865 in words is "fifty-five billion, seven hundred ninety-five million, five hundred seventy-one thousand, eight hundred sixty-five".