56000517899 has 4 divisors (see below), whose sum is σ = 56041485264. Its totient is φ = 55959550536.

The previous prime is 56000517877. The next prime is 56000517971. The reversal of 56000517899 is 99871500065.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99871500065 = 5 ⋅19974300013.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56000517899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56000517809) 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, 20481632 + ... + 20484365.

It is an arithmetic number, because the mean of its divisors is an integer number (14010371316).

Almost surely, 2^56000517899 is an apocalyptic number.

56000517899 is a deficient number, since it is larger than the sum of its proper divisors (40967365).

56000517899 is a wasteful number, since it uses less digits than its factorization.

56000517899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40967364.

The product of its (nonzero) digits is 680400, while the sum is 50.

The spelling of 56000517899 in words is "fifty-six billion, five hundred seventeen thousand, eight hundred ninety-nine".