56518303239 has 12 divisors (see below), whose sum is σ = 82088587672. Its totient is φ = 37470697200.

The previous prime is 56518303223. The next prime is 56518303243. The reversal of 56518303239 is 93230381565.

It is a happy number.

56518303239 is a `hidden beast` number, since 565 + 1 + 83 + 0 + 3 + 2 + 3 + 9 = 666.

It is not a de Polignac number, because 56518303239 - 2⁴ = 56518303223 is a prime.

It is a super-2 number, since 2×56518303239² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56518303194 and 56518303203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56618303239) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17345917 + ... + 17349174.

Almost surely, 2^56518303239 is an apocalyptic number.

56518303239 is a deficient number, since it is larger than the sum of its proper divisors (25570284433).

56518303239 is a wasteful number, since it uses less digits than its factorization.

56518303239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34695278 (or 34695275 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

The spelling of 56518303239 in words is "fifty-six billion, five hundred eighteen million, three hundred three thousand, two hundred thirty-nine".