18352033368681 has 16 divisors (see below), whose sum is σ = 24503293421568. Its totient is φ = 12217732890000.

The previous prime is 18352033368553. The next prime is 18352033368719. The reversal of 18352033368681 is 18686333025381.

It is a happy number.

It is not a de Polignac number, because 18352033368681 - 2⁷ = 18352033368553 is a prime.

It is a super-2 number, since 2×18352033368681² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18352033368181) 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, 43070380 + ... + 43494386.

It is an arithmetic number, because the mean of its divisors is an integer number (1531455838848).

Almost surely, 2^{18352033368681} is an apocalyptic number.

It is an amenable number.

18352033368681 is a deficient number, since it is larger than the sum of its proper divisors (6151260052887).

18352033368681 is a wasteful number, since it uses less digits than its factorization.

18352033368681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443972.

The product of its (nonzero) digits is 14929920, while the sum is 57.

The spelling of 18352033368681 in words is "eighteen trillion, three hundred fifty-two billion, thirty-three million, three hundred sixty-eight thousand, six hundred eighty-one".