15055144232320 has 64 divisors (see below), whose sum is σ = 36108439844400. Its totient is φ = 6002441791488.

The previous prime is 15055144232309. The next prime is 15055144232363. The reversal of 15055144232320 is 2323244155051.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 15055144232320.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38115675 + ... + 38508634.

Almost surely, 2^{15055144232320} is an apocalyptic number.

15055144232320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15055144232320 is an abundant number, since it is smaller than the sum of its proper divisors (21053295612080).

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

15055144232320 is an equidigital number, since it uses as much as digits as its factorization.

15055144232320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76624635 (or 76624623 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 37.

Adding to 15055144232320 its reverse (2323244155051), we get a palindrome (17378388387371).

The spelling of 15055144232320 in words is "fifteen trillion, fifty-five billion, one hundred forty-four million, two hundred thirty-two thousand, three hundred twenty".