56988518401 has 4 divisors (see below), whose sum is σ = 56989000404. Its totient is φ = 56988036400.

The previous prime is 56988518351. The next prime is 56988518423. The reversal of 56988518401 is 10481588965.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 48734977600 + 8253540801 = 220760^2 + 90849^2 .

It is a cyclic number.

It is not a de Polignac number, because 56988518401 - 2⁹ = 56988517889 is a prime.

It is a super-3 number, since 3×56988518401³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56988518491) 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, 70911 + ... + 344971.

It is an arithmetic number, because the mean of its divisors is an integer number (14247250101).

Almost surely, 2^56988518401 is an apocalyptic number.

It is an amenable number.

56988518401 is a deficient number, since it is larger than the sum of its proper divisors (482003).

56988518401 is a wasteful number, since it uses less digits than its factorization.

56988518401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482002.

The product of its (nonzero) digits is 2764800, while the sum is 55.

The spelling of 56988518401 in words is "fifty-six billion, nine hundred eighty-eight million, five hundred eighteen thousand, four hundred one".