18276539671013 has 64 divisors (see below), whose sum is σ = 21159456460800. Its totient is φ = 15661784678400.

The previous prime is 18276539670929. The next prime is 18276539671043. The reversal of 18276539671013 is 31017693567281.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 18276539671013 - 2²⁶ = 18276472562149 is a prime.

It is a super-2 number, since 2×18276539671013² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18276539671043) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 406493228 + ... + 406538186.

It is an arithmetic number, because the mean of its divisors is an integer number (330616507200).

Almost surely, 2^{18276539671013} is an apocalyptic number.

18276539671013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

18276539671013 is a deficient number, since it is larger than the sum of its proper divisors (2882916789787).

18276539671013 is a wasteful number, since it uses less digits than its factorization.

18276539671013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45382.

The product of its (nonzero) digits is 11430720, while the sum is 59.

The spelling of 18276539671013 in words is "eighteen trillion, two hundred seventy-six billion, five hundred thirty-nine million, six hundred seventy-one thousand, thirteen".