56371506081 has 16 divisors (see below), whose sum is σ = 85559915520. Its totient is φ = 32679133520.

The previous prime is 56371506071. The next prime is 56371506091. The reversal of 56371506081 is 18060517365.

It is an interprime number because it is at equal distance from previous prime (56371506071) and next prime (56371506091).

It is not a de Polignac number, because 56371506081 - 2¹⁴ = 56371489697 is a prime.

It is a super-2 number, since 2×56371506081² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56371506071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37134621 + ... + 37136138.

It is an arithmetic number, because the mean of its divisors is an integer number (5347494720).

Almost surely, 2^56371506081 is an apocalyptic number.

It is an amenable number.

56371506081 is a deficient number, since it is larger than the sum of its proper divisors (29188409439).

56371506081 is a wasteful number, since it uses less digits than its factorization.

56371506081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74270796.

The product of its (nonzero) digits is 151200, while the sum is 42.

The spelling of 56371506081 in words is "fifty-six billion, three hundred seventy-one million, five hundred six thousand, eighty-one".