56523335746421 has 4 divisors (see below), whose sum is σ = 56839108572000. Its totient is φ = 56207562920844.

The previous prime is 56523335746369. The next prime is 56523335746429. The reversal of 56523335746421 is 12464753332565.

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.

It is a cyclic number.

It is not a de Polignac number, because 56523335746421 - 2¹⁸ = 56523335484277 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 (56523335746429) 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, 157886412521 + ... + 157886412878.

It is an arithmetic number, because the mean of its divisors is an integer number (14209777143000).

Almost surely, 2^{56523335746421} is an apocalyptic number.

It is an amenable number.

56523335746421 is a deficient number, since it is larger than the sum of its proper divisors (315772825579).

56523335746421 is a wasteful number, since it uses less digits than its factorization.

56523335746421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315772825578.

The product of its digits is 54432000, while the sum is 56.

The spelling of 56523335746421 in words is "fifty-six trillion, five hundred twenty-three billion, three hundred thirty-five million, seven hundred forty-six thousand, four hundred twenty-one".