56380872271 has 4 divisors (see below), whose sum is σ = 56401857792. Its totient is φ = 56359886752.

The previous prime is 56380872263. The next prime is 56380872277. The reversal of 56380872271 is 17227808365.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17227808365 = 5 ⋅3445561673.

It is a cyclic number.

It is not a de Polignac number, because 56380872271 - 2³ = 56380872263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56380872277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10488730 + ... + 10494103.

It is an arithmetic number, because the mean of its divisors is an integer number (14100464448).

Almost surely, 2^56380872271 is an apocalyptic number.

56380872271 is a deficient number, since it is larger than the sum of its proper divisors (20985521).

56380872271 is a wasteful number, since it uses less digits than its factorization.

56380872271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20985520.

The product of its (nonzero) digits is 1128960, while the sum is 49.

The spelling of 56380872271 in words is "fifty-six billion, three hundred eighty million, eight hundred seventy-two thousand, two hundred seventy-one".