56668013513 has 8 divisors (see below), whose sum is σ = 59950296000. Its totient is φ = 53415706608.

The previous prime is 56668013509. The next prime is 56668013561. The reversal of 56668013513 is 31531086665.

56668013513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56668013513 - 2² = 56668013509 is a prime.

It is a super-2 number, since 2×56668013513² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56668013713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7490006 + ... + 7497567.

It is an arithmetic number, because the mean of its divisors is an integer number (7493787000).

Almost surely, 2^56668013513 is an apocalyptic number.

It is an amenable number.

56668013513 is a deficient number, since it is larger than the sum of its proper divisors (3282282487).

56668013513 is a wasteful number, since it uses less digits than its factorization.

56668013513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14987791.

The product of its (nonzero) digits is 388800, while the sum is 44.

The spelling of 56668013513 in words is "fifty-six billion, six hundred sixty-eight million, thirteen thousand, five hundred thirteen".