56381528959 has 64 divisors (see below), whose sum is σ = 71164016640. Its totient is φ = 43570483200.

The previous prime is 56381528933. The next prime is 56381528989. The reversal of 56381528959 is 95982518365.

It is not a de Polignac number, because 56381528959 - 2⁷ = 56381528831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56381528897 and 56381528906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56381528989) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 91084552 + ... + 91085170.

It is an arithmetic number, because the mean of its divisors is an integer number (1111937760).

Almost surely, 2^56381528959 is an apocalyptic number.

56381528959 is a deficient number, since it is larger than the sum of its proper divisors (14782487681).

56381528959 is a wasteful number, since it uses less digits than its factorization.

56381528959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968.

The product of its digits is 23328000, while the sum is 61.

The spelling of 56381528959 in words is "fifty-six billion, three hundred eighty-one million, five hundred twenty-eight thousand, nine hundred fifty-nine".