56518602949 has 8 divisors (see below), whose sum is σ = 60230741760. Its totient is φ = 52911031536.

The previous prime is 56518602919. The next prime is 56518602997. The reversal of 56518602949 is 94920681565.

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

It is not a de Polignac number, because 56518602949 - 2²⁷ = 56384385221 is a prime.

It is a super-2 number, since 2×56518602949² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56518602949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56518602919) 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, 26140734 + ... + 26142895.

It is an arithmetic number, because the mean of its divisors is an integer number (7528842720).

Almost surely, 2^56518602949 is an apocalyptic number.

It is an amenable number.

56518602949 is a deficient number, since it is larger than the sum of its proper divisors (3712138811).

56518602949 is a wasteful number, since it uses less digits than its factorization.

56518602949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52283699.

The product of its (nonzero) digits is 4665600, while the sum is 55.

The spelling of 56518602949 in words is "fifty-six billion, five hundred eighteen million, six hundred two thousand, nine hundred forty-nine".