18312179093380 has 12 divisors (see below), whose sum is σ = 38455576096140. Its totient is φ = 7324871637344.

The previous prime is 18312179093333. The next prime is 18312179093387. The reversal of 18312179093380 is 8339097121381.

It can be written as a sum of positive squares in 2 ways, for example, as 3963356309124 + 14348822784256 = 1990818^2 + 3787984^2 .

It is not an unprimeable number, because it can be changed into a prime (18312179093387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 457804477315 + ... + 457804477354.

It is an arithmetic number, because the mean of its divisors is an integer number (3204631341345).

Almost surely, 2^{18312179093380} is an apocalyptic number.

18312179093380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18312179093380 is an abundant number, since it is smaller than the sum of its proper divisors (20143397002760).

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

18312179093380 is a wasteful number, since it uses less digits than its factorization.

18312179093380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915608954678 (or 915608954676 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 55.

The spelling of 18312179093380 in words is "eighteen trillion, three hundred twelve billion, one hundred seventy-nine million, ninety-three thousand, three hundred eighty".