56385982513 has 6 divisors (see below), whose sum is σ = 65591857266. Its totient is φ = 48330842112.

The previous prime is 56385982463. The next prime is 56385982559. The reversal of 56385982513 is 31528958365.

It can be written as a sum of positive squares in only one way, i.e., 30139390449 + 26246592064 = 173607^2 + 162008^2 .

It is not a de Polignac number, because 56385982513 - 2²⁵ = 56352428081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56385980513) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 575367120 + ... + 575367217.

It is an arithmetic number, because the mean of its divisors is an integer number (10931976211).

Almost surely, 2^56385982513 is an apocalyptic number.

It is an amenable number.

56385982513 is a deficient number, since it is larger than the sum of its proper divisors (9205874753).

56385982513 is a wasteful number, since it uses less digits than its factorization.

56385982513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150734351 (or 1150734344 counting only the distinct ones).

The product of its digits is 7776000, while the sum is 55.

The spelling of 56385982513 in words is "fifty-six billion, three hundred eighty-five million, nine hundred eighty-two thousand, five hundred thirteen".