18503450374401 has 24 divisors (see below), whose sum is σ = 28519297079520. Its totient is φ = 11526302172096.

The previous prime is 18503450374369. The next prime is 18503450374427. The reversal of 18503450374401 is 10447305430581.

18503450374401 is a `hidden beast` number, since 1 + 8 + 5 + 0 + 34 + 503 + 74 + 40 + 1 = 666.

It is not a de Polignac number, because 18503450374401 - 2⁵ = 18503450374369 is a prime.

It is a super-2 number, since 2×18503450374401² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18503450374601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 741133491 + ... + 741158456.

It is an arithmetic number, because the mean of its divisors is an integer number (1188304044980).

Almost surely, 2^{18503450374401} is an apocalyptic number.

It is an amenable number.

18503450374401 is a deficient number, since it is larger than the sum of its proper divisors (10015846705119).

18503450374401 is a wasteful number, since it uses less digits than its factorization.

18503450374401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482292045 (or 1482292042 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The spelling of 18503450374401 in words is "eighteen trillion, five hundred three billion, four hundred fifty million, three hundred seventy-four thousand, four hundred one".