15255131123320 has 64 divisors (see below), whose sum is σ = 38315213101440. Its totient is φ = 5418312950400.

The previous prime is 15255131123299. The next prime is 15255131123329. The reversal of 15255131123320 is 2332113155251.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15255131123329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 403129366 + ... + 403167205.

It is an arithmetic number, because the mean of its divisors is an integer number (598675204710).

Almost surely, 2^{15255131123320} is an apocalyptic number.

15255131123320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15255131123320 is an abundant number, since it is smaller than the sum of its proper divisors (23060081978120).

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

15255131123320 is a wasteful number, since it uses less digits than its factorization.

15255131123320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806296636 (or 806296632 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 34.

Adding to 15255131123320 its reverse (2332113155251), we get a palindrome (17587244278571).

The spelling of 15255131123320 in words is "fifteen trillion, two hundred fifty-five billion, one hundred thirty-one million, one hundred twenty-three thousand, three hundred twenty".