18696520879372 has 48 divisors (see below), whose sum is σ = 37620641318400. Its totient is φ = 7964108393472.

The previous prime is 18696520879363. The next prime is 18696520879397. The reversal of 18696520879372 is 27397802569681.

It is a super-2 number, since 2×18696520879372² (a number of 27 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (73) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18696520879295 and 18696520879304.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3505068 + ... + 7048300.

It is an arithmetic number, because the mean of its divisors is an integer number (783763360800).

Almost surely, 2^{18696520879372} is an apocalyptic number.

It is an amenable number.

18696520879372 is an abundant number, since it is smaller than the sum of its proper divisors (18924120439028).

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

18696520879372 is a wasteful number, since it uses less digits than its factorization.

18696520879372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3544390 (or 3544388 counting only the distinct ones).

The product of its (nonzero) digits is 548674560, while the sum is 73.

The spelling of 18696520879372 in words is "eighteen trillion, six hundred ninety-six billion, five hundred twenty million, eight hundred seventy-nine thousand, three hundred seventy-two".