18334123351516 has 72 divisors (see below), whose sum is σ = 38947708832256. Its totient is φ = 7515479109600.

The previous prime is 18334123351499. The next prime is 18334123351561. The reversal of 18334123351516 is 61515332143381.

It is a super-2 number, since 2×18334123351516² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102363841 + ... + 102542791.

It is an arithmetic number, because the mean of its divisors is an integer number (540940400448).

Almost surely, 2^{18334123351516} is an apocalyptic number.

It is an amenable number.

18334123351516 is an abundant number, since it is smaller than the sum of its proper divisors (20613585480740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18334123351516 is a wasteful number, since it uses less digits than its factorization.

18334123351516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201719 (or 201710 counting only the distinct ones).

The product of its digits is 777600, while the sum is 46.

Adding to 18334123351516 its reverse (61515332143381), we get a palindrome (79849455494897).

The spelling of 18334123351516 in words is "eighteen trillion, three hundred thirty-four billion, one hundred twenty-three million, three hundred fifty-one thousand, five hundred sixteen".