56820061715 has 4 divisors (see below), whose sum is σ = 68184074064. Its totient is φ = 45456049368.

The previous prime is 56820061663. The next prime is 56820061721. The reversal of 56820061715 is 51716002865.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56820061715 - 2¹⁸ = 56819799571 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5682006167 + ... + 5682006176.

It is an arithmetic number, because the mean of its divisors is an integer number (17046018516).

Almost surely, 2^56820061715 is an apocalyptic number.

56820061715 is a deficient number, since it is larger than the sum of its proper divisors (11364012349).

56820061715 is a wasteful number, since it uses less digits than its factorization.

56820061715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11364012348.

The product of its (nonzero) digits is 100800, while the sum is 41.

The spelling of 56820061715 in words is "fifty-six billion, eight hundred twenty million, sixty-one thousand, seven hundred fifteen".