18101644641131 has 16 divisors (see below), whose sum is σ = 18459632572128. Its totient is φ = 17744273164800.

The previous prime is 18101644641103. The next prime is 18101644641191. The reversal of 18101644641131 is 13114644610181.

It is a cyclic number.

It is not a de Polignac number, because 18101644641131 - 2³⁸ = 17826766734187 is a prime.

It is a super-2 number, since 2×18101644641131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18101644641191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 276239651 + ... + 276305171.

It is an arithmetic number, because the mean of its divisors is an integer number (1153727035758).

Almost surely, 2^{18101644641131} is an apocalyptic number.

18101644641131 is a deficient number, since it is larger than the sum of its proper divisors (357987930997).

18101644641131 is a wasteful number, since it uses less digits than its factorization.

18101644641131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70142.

The product of its (nonzero) digits is 55296, while the sum is 41.

The spelling of 18101644641131 in words is "eighteen trillion, one hundred one billion, six hundred forty-four million, six hundred forty-one thousand, one hundred thirty-one".