56861142515 has 8 divisors (see below), whose sum is σ = 68257271040. Its totient is φ = 45472980672.

The previous prime is 56861142511. The next prime is 56861142551. The reversal of 56861142515 is 51524116865.

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

It is a cyclic number.

It is not a de Polignac number, because 56861142515 - 2² = 56861142511 is a prime.

It is a super-2 number, since 2×56861142515² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56861142511) 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, 1975955 + ... + 2004524.

It is an arithmetic number, because the mean of its divisors is an integer number (8532158880).

Almost surely, 2^56861142515 is an apocalyptic number.

56861142515 is a deficient number, since it is larger than the sum of its proper divisors (11396128525).

56861142515 is a wasteful number, since it uses less digits than its factorization.

56861142515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3983341.

The product of its digits is 288000, while the sum is 44.

The spelling of 56861142515 in words is "fifty-six billion, eight hundred sixty-one million, one hundred forty-two thousand, five hundred fifteen".