18874673562791 has 2 divisors, whose sum is σ = 18874673562792. Its totient is φ = 18874673562790.

The previous prime is 18874673562781. The next prime is 18874673562847. The reversal of 18874673562791 is 19726537647881.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18874673562791 - 2⁶ = 18874673562727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18874673562751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9437336781395 + 9437336781396.

It is an arithmetic number, because the mean of its divisors is an integer number (9437336781396).

Almost surely, 2^{18874673562791} is an apocalyptic number.

18874673562791 is a deficient number, since it is larger than the sum of its proper divisors (1).

18874673562791 is an equidigital number, since it uses as much as digits as its factorization.

18874673562791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 853493760, while the sum is 74.

The spelling of 18874673562791 in words is "eighteen trillion, eight hundred seventy-four billion, six hundred seventy-three million, five hundred sixty-two thousand, seven hundred ninety-one".