56842380281 has 4 divisors (see below), whose sum is σ = 56842944000. Its totient is φ = 56841816564.

The previous prime is 56842380277. The next prime is 56842380341. The reversal of 56842380281 is 18208324865.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 56842380281 - 2² = 56842380277 is a prime.

It is a super-2 number, since 2×56842380281² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56842320281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84581 + ... + 347618.

It is an arithmetic number, because the mean of its divisors is an integer number (14210736000).

Almost surely, 2^56842380281 is an apocalyptic number.

It is an amenable number.

56842380281 is a deficient number, since it is larger than the sum of its proper divisors (563719).

56842380281 is a wasteful number, since it uses less digits than its factorization.

56842380281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563718.

The product of its (nonzero) digits is 737280, while the sum is 47.

The spelling of 56842380281 in words is "fifty-six billion, eight hundred forty-two million, three hundred eighty thousand, two hundred eighty-one".