18876487605201 has 8 divisors (see below), whose sum is σ = 27965166822560. Its totient is φ = 12584325070116.

The previous prime is 18876487605133. The next prime is 18876487605203. The reversal of 18876487605201 is 10250678467881.

It is a happy number.

18876487605201 is a `hidden beast` number, since 1 + 8 + 8 + 7 + 6 + 48 + 7 + 60 + 520 + 1 = 666.

It is not a de Polignac number, because 18876487605201 - 2²⁶ = 18876420496337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18876487605203) 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, 349564585255 + ... + 349564585308.

It is an arithmetic number, because the mean of its divisors is an integer number (3495645852820).

Almost surely, 2^{18876487605201} is an apocalyptic number.

It is an amenable number.

18876487605201 is a deficient number, since it is larger than the sum of its proper divisors (9088679217359).

18876487605201 is an equidigital number, since it uses as much as digits as its factorization.

18876487605201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699129170572 (or 699129170566 counting only the distinct ones).

The product of its (nonzero) digits is 36126720, while the sum is 63.

Adding to 18876487605201 its sum of digits (63), we get a square (18876487605264 = 4344708²).

The spelling of 18876487605201 in words is "eighteen trillion, eight hundred seventy-six billion, four hundred eighty-seven million, six hundred five thousand, two hundred one".