56855860491 has 16 divisors (see below), whose sum is σ = 76612741920. Its totient is φ = 37502438400.

The previous prime is 56855860441. The next prime is 56855860519. The reversal of 56855860491 is 19406855865.

It is not a de Polignac number, because 56855860491 - 2⁹ = 56855859979 is a prime.

It is a super-2 number, since 2×56855860491² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56855860441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105211 + ... + 353243.

It is an arithmetic number, because the mean of its divisors is an integer number (4788296370).

Almost surely, 2^56855860491 is an apocalyptic number.

56855860491 is a deficient number, since it is larger than the sum of its proper divisors (19756881429).

56855860491 is a wasteful number, since it uses less digits than its factorization.

56855860491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248846.

The product of its (nonzero) digits is 10368000, while the sum is 57.

The spelling of 56855860491 in words is "fifty-six billion, eight hundred fifty-five million, eight hundred sixty thousand, four hundred ninety-one".