56000018000001 has 16 divisors (see below), whose sum is σ = 76488629853888. Its totient is φ = 36422394796800.

The previous prime is 56000017999979. The next prime is 56000018000029. The reversal of 56000018000001 is 10000081000065.

It is not a de Polignac number, because 56000018000001 - 2²³ = 56000009611393 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56000018070001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9666670 + ... + 14333336.

It is an arithmetic number, because the mean of its divisors is an integer number (4780539365868).

Almost surely, 2^{56000018000001} is an apocalyptic number.

56000018000001 is the 4000001-st nonagonal number.

It is an amenable number.

56000018000001 is a deficient number, since it is larger than the sum of its proper divisors (20488611853887).

56000018000001 is a wasteful number, since it uses less digits than its factorization.

56000018000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4764272.

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 56000018000001 its reverse (10000081000065), we get a palindrome (66000099000066).

The spelling of 56000018000001 in words is "fifty-six trillion, eighteen million, one", and thus it is an aban number and an uban number.