18052889012991 has 48 divisors (see below), whose sum is σ = 32226004721664. Its totient is φ = 9502539800832.

The previous prime is 18052889012969. The next prime is 18052889012999. The reversal of 18052889012991 is 19921098825081.

18052889012991 is a `hidden beast` number, since 1 + 8 + 0 + 528 + 8 + 9 + 0 + 12 + 9 + 91 = 666.

It is not a de Polignac number, because 18052889012991 - 2¹⁷ = 18052888881919 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18052889012999) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 179269935 + ... + 179370608.

It is an arithmetic number, because the mean of its divisors is an integer number (671375098368).

Almost surely, 2^{18052889012991} is an apocalyptic number.

18052889012991 is a deficient number, since it is larger than the sum of its proper divisors (14173115708673).

18052889012991 is a wasteful number, since it uses less digits than its factorization.

18052889012991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358640620 (or 358640617 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 63.

The spelling of 18052889012991 in words is "eighteen trillion, fifty-two billion, eight hundred eighty-nine million, twelve thousand, nine hundred ninety-one".