56877340421 has 16 divisors (see below), whose sum is σ = 64567134720. Its totient is φ = 49648164720.

The previous prime is 56877340393. The next prime is 56877340423. The reversal of 56877340421 is 12404377865.

It is not a de Polignac number, because 56877340421 - 2⁶ = 56877340357 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56877340423) 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 15 ways as a sum of consecutive naturals, for example, 991145 + ... + 1046958.

It is an arithmetic number, because the mean of its divisors is an integer number (4035445920).

Almost surely, 2^56877340421 is an apocalyptic number.

It is an amenable number.

56877340421 is a deficient number, since it is larger than the sum of its proper divisors (7689794299).

56877340421 is a wasteful number, since it uses less digits than its factorization.

56877340421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2038216.

The product of its (nonzero) digits is 1128960, while the sum is 47.

The spelling of 56877340421 in words is "fifty-six billion, eight hundred seventy-seven million, three hundred forty thousand, four hundred twenty-one".