15055215322400 has 144 divisors (see below), whose sum is σ = 40383230620320. Its totient is φ = 5435237529600.

The previous prime is 15055215322337. The next prime is 15055215322403. The reversal of 15055215322400 is 422351255051.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (15055215322403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4930829 + ... + 7377228.

It is an arithmetic number, because the mean of its divisors is an integer number (280439101530).

Almost surely, 2^{15055215322400} is an apocalyptic number.

15055215322400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15055215322400 is an abundant number, since it is smaller than the sum of its proper divisors (25328015297920).

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

15055215322400 is a wasteful number, since it uses less digits than its factorization.

15055215322400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12308227 (or 12308214 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 35.

Adding to 15055215322400 its reverse (422351255051), we get a palindrome (15477566577451).

The spelling of 15055215322400 in words is "fifteen trillion, fifty-five billion, two hundred fifteen million, three hundred twenty-two thousand, four hundred".