56861442427 has 4 divisors (see below), whose sum is σ = 60206233176. Its totient is φ = 53516651680.

The previous prime is 56861442419. The next prime is 56861442433. The reversal of 56861442427 is 72424416865.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56861442427 - 2³ = 56861442419 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (56861442457) 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, 1672395349 + ... + 1672395382.

It is an arithmetic number, because the mean of its divisors is an integer number (15051558294).

Almost surely, 2^56861442427 is an apocalyptic number.

56861442427 is a deficient number, since it is larger than the sum of its proper divisors (3344790749).

56861442427 is a wasteful number, since it uses less digits than its factorization.

56861442427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3344790748.

The product of its digits is 2580480, while the sum is 49.

The spelling of 56861442427 in words is "fifty-six billion, eight hundred sixty-one million, four hundred forty-two thousand, four hundred twenty-seven".