56233715421 has 16 divisors (see below), whose sum is σ = 85495604544. Its totient is φ = 32569753344.

The previous prime is 56233715413. The next prime is 56233715423. The reversal of 56233715421 is 12451733265.

It is not a de Polignac number, because 56233715421 - 2³ = 56233715413 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 56233715421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56233715423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42407871 + ... + 42409196.

It is an arithmetic number, because the mean of its divisors is an integer number (5343475284).

Almost surely, 2^56233715421 is an apocalyptic number.

56233715421 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

56233715421 is a deficient number, since it is larger than the sum of its proper divisors (29261889123).

56233715421 is a wasteful number, since it uses less digits than its factorization.

56233715421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84817100.

The product of its digits is 151200, while the sum is 39.

The spelling of 56233715421 in words is "fifty-six billion, two hundred thirty-three million, seven hundred fifteen thousand, four hundred twenty-one".