18678212525122 has 16 divisors (see below), whose sum is σ = 28028068621920. Its totient is φ = 9335523410208.

The previous prime is 18678212525117. The next prime is 18678212525143. The reversal of 18678212525122 is 22152521287681.

It is a super-2 number, since 2×18678212525122² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18678212525122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95832493 + ... + 96027199.

It is an arithmetic number, because the mean of its divisors is an integer number (1751754288870).

Almost surely, 2^{18678212525122} is an apocalyptic number.

18678212525122 is a deficient number, since it is larger than the sum of its proper divisors (9349856096798).

18678212525122 is a wasteful number, since it uses less digits than its factorization.

18678212525122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212865.

The product of its digits is 2150400, while the sum is 52.

The spelling of 18678212525122 in words is "eighteen trillion, six hundred seventy-eight billion, two hundred twelve million, five hundred twenty-five thousand, one hundred twenty-two".