56642471171 has 16 divisors (see below), whose sum is σ = 66577297920. Its totient is φ = 47509074720.

The previous prime is 56642471141. The next prime is 56642471177. The reversal of 56642471171 is 17117424665.

It is a cyclic number.

It is not a de Polignac number, because 56642471171 - 2²⁶ = 56575362307 is a prime.

It is a super-2 number, since 2×56642471171² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56642471177) 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, 202790 + ... + 392948.

It is an arithmetic number, because the mean of its divisors is an integer number (4161081120).

Almost surely, 2^56642471171 is an apocalyptic number.

56642471171 is a deficient number, since it is larger than the sum of its proper divisors (9934826749).

56642471171 is a wasteful number, since it uses less digits than its factorization.

56642471171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192266.

The product of its digits is 282240, while the sum is 44.

The spelling of 56642471171 in words is "fifty-six billion, six hundred forty-two million, four hundred seventy-one thousand, one hundred seventy-one".