18153786886378 has 16 divisors (see below), whose sum is σ = 31991288779296. Its totient is φ = 7616973518640.

The previous prime is 18153786886343. The next prime is 18153786886379. The reversal of 18153786886378 is 87368868735181.

It is a junction number, because it is equal to n+sod(n) for n = 18153786886298 and 18153786886307.

It is not an unprimeable number, because it can be changed into a prime (18153786886379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31737389376 + ... + 31737389947.

It is an arithmetic number, because the mean of its divisors is an integer number (1999455548706).

Almost surely, 2^{18153786886378} is an apocalyptic number.

18153786886378 is a deficient number, since it is larger than the sum of its proper divisors (13837501892918).

18153786886378 is a wasteful number, since it uses less digits than its factorization.

18153786886378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63474779349.

The product of its digits is 2601123840, while the sum is 79.

The spelling of 18153786886378 in words is "eighteen trillion, one hundred fifty-three billion, seven hundred eighty-six million, eight hundred eighty-six thousand, three hundred seventy-eight".