56235723653 has 4 divisors (see below), whose sum is σ = 57075062880. Its totient is φ = 55396384428.

The previous prime is 56235723641. The next prime is 56235723679. The reversal of 56235723653 is 35632753265.

56235723653 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 an emirpimes, since its reverse is a distinct semiprime: 35632753265 = 5 ⋅7126550653.

It is a cyclic number.

It is not a de Polignac number, because 56235723653 - 2²² = 56231529349 is a prime.

It is a super-2 number, since 2×56235723653² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 56235723598 and 56235723607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56235723253) 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, 419669513 + ... + 419669646.

It is an arithmetic number, because the mean of its divisors is an integer number (14268765720).

Almost surely, 2^56235723653 is an apocalyptic number.

It is an amenable number.

56235723653 is a deficient number, since it is larger than the sum of its proper divisors (839339227).

56235723653 is an equidigital number, since it uses as much as digits as its factorization.

56235723653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839339226.

The product of its digits is 3402000, while the sum is 47.

The spelling of 56235723653 in words is "fifty-six billion, two hundred thirty-five million, seven hundred twenty-three thousand, six hundred fifty-three".