18679802193965 has 32 divisors (see below), whose sum is σ = 24482966860800. Its totient is φ = 13568979985920.

The previous prime is 18679802193953. The next prime is 18679802194061. The reversal of 18679802193965 is 56939120897681.

It is not a de Polignac number, because 18679802193965 - 2¹⁸ = 18679801931821 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18679802193892 and 18679802193901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 230965124 + ... + 231045986.

It is an arithmetic number, because the mean of its divisors is an integer number (765092714400).

Almost surely, 2^{18679802193965} is an apocalyptic number.

It is an amenable number.

18679802193965 is a deficient number, since it is larger than the sum of its proper divisors (5803164666835).

18679802193965 is a wasteful number, since it uses less digits than its factorization.

18679802193965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85877.

The product of its (nonzero) digits is 352719360, while the sum is 74.

The spelling of 18679802193965 in words is "eighteen trillion, six hundred seventy-nine billion, eight hundred two million, one hundred ninety-three thousand, nine hundred sixty-five".