56398957113 has 4 divisors (see below), whose sum is σ = 75198609488. Its totient is φ = 37599304740.

The previous prime is 56398957073. The next prime is 56398957123. The reversal of 56398957113 is 31175989365.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 56398957113 - 2⁶ = 56398957049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56398957123) 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 3 ways as a sum of consecutive naturals, for example, 9399826183 + ... + 9399826188.

It is an arithmetic number, because the mean of its divisors is an integer number (18799652372).

Almost surely, 2^56398957113 is an apocalyptic number.

It is an amenable number.

56398957113 is a deficient number, since it is larger than the sum of its proper divisors (18799652375).

56398957113 is a wasteful number, since it uses less digits than its factorization.

56398957113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18799652374.

The product of its digits is 6123600, while the sum is 57.

The spelling of 56398957113 in words is "fifty-six billion, three hundred ninety-eight million, nine hundred fifty-seven thousand, one hundred thirteen".