56513215337 has 16 divisors (see below), whose sum is σ = 59698933632. Its totient is φ = 53391233280.

The previous prime is 56513215301. The next prime is 56513215349. The reversal of 56513215337 is 73351231565.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 56513215337 - 2¹⁰ = 56513214313 is a prime.

It is a super-2 number, since 2×56513215337² (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 = 56513215294 and 56513215303.

It is not an unprimeable number, because it can be changed into a prime (56513215537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 795287 + ... + 863427.

It is an arithmetic number, because the mean of its divisors is an integer number (3731183352).

Almost surely, 2^56513215337 is an apocalyptic number.

It is an amenable number.

56513215337 is a deficient number, since it is larger than the sum of its proper divisors (3185718295).

56513215337 is a wasteful number, since it uses less digits than its factorization.

56513215337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68608.

The product of its digits is 283500, while the sum is 41.

The spelling of 56513215337 in words is "fifty-six billion, five hundred thirteen million, two hundred fifteen thousand, three hundred thirty-seven".