18696679530816 has 336 divisors, whose sum is σ = 58530407500800. Its totient is φ = 5251007204352.

The previous prime is 18696679530791. The next prime is 18696679530937. The reversal of 18696679530816 is 61803597669681.

It is a tau number, because it is divible by the number of its divisors (336).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 168658255 + ... + 168769073.

Almost surely, 2^{18696679530816} is an apocalyptic number.

18696679530816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18696679530816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29265203750400).

18696679530816 is an abundant number, since it is smaller than the sum of its proper divisors (39833727969984).

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

18696679530816 is a wasteful number, since it uses less digits than its factorization.

18696679530816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111154 (or 111137 counting only the distinct ones).

The product of its (nonzero) digits is 705438720, while the sum is 75.

The spelling of 18696679530816 in words is "eighteen trillion, six hundred ninety-six billion, six hundred seventy-nine million, five hundred thirty thousand, eight hundred sixteen".