56642561359 has 8 divisors (see below), whose sum is σ = 58598696160. Its totient is φ = 54686622816.

The previous prime is 56642561323. The next prime is 56642561377. The reversal of 56642561359 is 95316524665.

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 56642561359 - 2¹⁷ = 56642430287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56642561159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 770254 + ... + 840580.

It is an arithmetic number, because the mean of its divisors is an integer number (7324837020).

Almost surely, 2^56642561359 is an apocalyptic number.

56642561359 is a deficient number, since it is larger than the sum of its proper divisors (1956134801).

56642561359 is a wasteful number, since it uses less digits than its factorization.

56642561359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98129.

The product of its digits is 5832000, while the sum is 52.

The spelling of 56642561359 in words is "fifty-six billion, six hundred forty-two million, five hundred sixty-one thousand, three hundred fifty-nine".