56146724209 has 9 divisors (see below), whose sum is σ = 56464363449. Its totient is φ = 55830865860.

The previous prime is 56146724171. The next prime is 56146724213. The reversal of 56146724209 is 90242764165.

The square root of 56146724209 is 236953.

It is a perfect power (a square), and thus also a powerful number.

It is a de Polignac number, because none of the positive numbers 2^k-56146724209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56146724219) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 49996522 + ... + 49997644.

It is an arithmetic number, because the mean of its divisors is an integer number (6273818161).

Almost surely, 2^56146724209 is an apocalyptic number.

56146724209 is the 236953-rd square number.

56146724209 is the 118477-th centered octagonal number.

It is an amenable number.

56146724209 is a deficient number, since it is larger than the sum of its proper divisors (317639240).

56146724209 is an frugal number, since it uses more digits than its factorization.

56146724209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2668 (or 1334 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 46.

The spelling of 56146724209 in words is "fifty-six billion, one hundred forty-six million, seven hundred twenty-four thousand, two hundred nine".