12515531401200 has 120 divisors (see below), whose sum is σ = 40092502741488. Its totient is φ = 3337384816640.

The previous prime is 12515531401111. The next prime is 12515531401231. The reversal of 12515531401200 is 210413551521.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×12515531401200² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52432522 + ... + 52670678.

Almost surely, 2^{12515531401200} is an apocalyptic number.

12515531401200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12515531401200 is an abundant number, since it is smaller than the sum of its proper divisors (27576971340288).

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

12515531401200 is a wasteful number, since it uses less digits than its factorization.

12515531401200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281971 (or 281960 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

Adding to 12515531401200 its reverse (210413551521), we get a palindrome (12725944952721).

The spelling of 12515531401200 in words is "twelve trillion, five hundred fifteen billion, five hundred thirty-one million, four hundred one thousand, two hundred".