56690591659 has 16 divisors (see below), whose sum is σ = 63879524352. Its totient is φ = 49918084128.

The previous prime is 56690591651. The next prime is 56690591677. The reversal of 56690591659 is 95619509665.

It is a cyclic number.

It is not a de Polignac number, because 56690591659 - 2³ = 56690591651 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56690591597 and 56690591606.

It is not an unprimeable number, because it can be changed into a prime (56690591651) 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 15 ways as a sum of consecutive naturals, for example, 148579 + ... + 368044.

It is an arithmetic number, because the mean of its divisors is an integer number (3992470272).

Almost surely, 2^56690591659 is an apocalyptic number.

56690591659 is a deficient number, since it is larger than the sum of its proper divisors (7188932693).

56690591659 is a wasteful number, since it uses less digits than its factorization.

56690591659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517026.

The product of its (nonzero) digits is 19683000, while the sum is 61.

The spelling of 56690591659 in words is "fifty-six billion, six hundred ninety million, five hundred ninety-one thousand, six hundred fifty-nine".