18464533153320 has 64 divisors (see below), whose sum is σ = 57180489776640. Its totient is φ = 4765040812800.

The previous prime is 18464533153249. The next prime is 18464533153327. The reversal of 18464533153320 is 2335133546481.

It is a self number, because there is not a number n which added to its sum of digits gives 18464533153320.

It is not an unprimeable number, because it can be changed into a prime (18464533153327) by changing a digit.

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, 2481788371 + ... + 2481795810.

It is an arithmetic number, because the mean of its divisors is an integer number (893445152760).

Almost surely, 2^{18464533153320} is an apocalyptic number.

18464533153320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18464533153320 is an abundant number, since it is smaller than the sum of its proper divisors (38715956623320).

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

18464533153320 is a wasteful number, since it uses less digits than its factorization.

18464533153320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4963584226 (or 4963584222 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 48.

The spelling of 18464533153320 in words is "eighteen trillion, four hundred sixty-four billion, five hundred thirty-three million, one hundred fifty-three thousand, three hundred twenty".