56206670871 has 32 divisors (see below), whose sum is σ = 81968644800. Its totient is φ = 34052143104.

The previous prime is 56206670867. The next prime is 56206670893. The reversal of 56206670871 is 17807660265.

It is not a de Polignac number, because 56206670871 - 2² = 56206670867 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56206670871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56206670171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 613845 + ... + 699441.

It is an arithmetic number, because the mean of its divisors is an integer number (2561520150).

Almost surely, 2^56206670871 is an apocalyptic number.

56206670871 is a deficient number, since it is larger than the sum of its proper divisors (25761973929).

56206670871 is a wasteful number, since it uses less digits than its factorization.

56206670871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85875.

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 56206670871 in words is "fifty-six billion, two hundred six million, six hundred seventy thousand, eight hundred seventy-one".