56815792321 has 8 divisors (see below), whose sum is σ = 60478077600. Its totient is φ = 53220705120.

The previous prime is 56815792303. The next prime is 56815792339. The reversal of 56815792321 is 12329751865.

It is an interprime number because it is at equal distance from previous prime (56815792303) and next prime (56815792339).

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 56815792321 - 2¹⁹ = 56815268033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56815792301) 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, 16797775 + ... + 16801156.

It is an arithmetic number, because the mean of its divisors is an integer number (7559759700).

Almost surely, 2^56815792321 is an apocalyptic number.

It is an amenable number.

56815792321 is a deficient number, since it is larger than the sum of its proper divisors (3662285279).

56815792321 is a wasteful number, since it uses less digits than its factorization.

56815792321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33599039.

The product of its digits is 907200, while the sum is 49.

The spelling of 56815792321 in words is "fifty-six billion, eight hundred fifteen million, seven hundred ninety-two thousand, three hundred twenty-one".