18868873430401 has 32 divisors (see below), whose sum is σ = 19991998208000. Its totient is φ = 17788107617280.

The previous prime is 18868873430399. The next prime is 18868873430413. The reversal of 18868873430401 is 10403437886881.

It is a cyclic number.

It is not a de Polignac number, because 18868873430401 - 2¹ = 18868873430399 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (61).

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 18868873430401.

It is not an unprimeable number, because it can be changed into a prime (18868873430201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77083000 + ... + 77327398.

It is an arithmetic number, because the mean of its divisors is an integer number (624749944000).

Almost surely, 2^{18868873430401} is an apocalyptic number.

It is an amenable number.

18868873430401 is a deficient number, since it is larger than the sum of its proper divisors (1123124777599).

18868873430401 is a wasteful number, since it uses less digits than its factorization.

18868873430401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245009.

The product of its (nonzero) digits is 24772608, while the sum is 61.

The spelling of 18868873430401 in words is "eighteen trillion, eight hundred sixty-eight billion, eight hundred seventy-three million, four hundred thirty thousand, four hundred one".