56837208561 has 8 divisors (see below), whose sum is σ = 86609079744. Its totient is φ = 32478404880.

The previous prime is 56837208529. The next prime is 56837208583. The reversal of 56837208561 is 16580273865.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56837208561 - 2⁵ = 56837208529 is a prime.

It is a super-2 number, since 2×56837208561² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56837208511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1353266850 + ... + 1353266891.

It is an arithmetic number, because the mean of its divisors is an integer number (10826134968).

Almost surely, 2^56837208561 is an apocalyptic number.

It is an amenable number.

56837208561 is a deficient number, since it is larger than the sum of its proper divisors (29771871183).

56837208561 is a wasteful number, since it uses less digits than its factorization.

56837208561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2706533751.

The product of its (nonzero) digits is 2419200, while the sum is 51.

The spelling of 56837208561 in words is "fifty-six billion, eight hundred thirty-seven million, two hundred eight thousand, five hundred sixty-one".