12150005251500 has 192 divisors, whose sum is σ = 40270848508800. Its totient is φ = 3160976832000.

The previous prime is 12150005251469. The next prime is 12150005251523. The reversal of 12150005251500 is 515250005121.

12150005251500 is a `hidden beast` number, since 1 + 2 + 1 + 500 + 0 + 5 + 2 + 5 + 150 + 0 = 666.

It is a super-2 number, since 2×12150005251500² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10422115 + ... + 11529114.

It is an arithmetic number, because the mean of its divisors is an integer number (209744002650).

Almost surely, 2^{12150005251500} is an apocalyptic number.

12150005251500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12150005251500 is an abundant number, since it is smaller than the sum of its proper divisors (28120843257300).

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

12150005251500 is a wasteful number, since it uses less digits than its factorization.

12150005251500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21951298 (or 21951280 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 27.

Adding to 12150005251500 its reverse (515250005121), we get a palindrome (12665255256621).

The spelling of 12150005251500 in words is "twelve trillion, one hundred fifty billion, five million, two hundred fifty-one thousand, five hundred".