12515323052322 has 144 divisors (see below), whose sum is σ = 29767368384000. Its totient is φ = 3795539005440.

The previous prime is 12515323052299. The next prime is 12515323052363. The reversal of 12515323052322 is 22325032351521.

12515323052322 is a `hidden beast` number, since 1 + 2 + 5 + 1 + 5 + 323 + 0 + 5 + 2 + 322 = 666.

It is a super-2 number, since 2×12515323052322² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 148157554 + ... + 148242002.

It is an arithmetic number, because the mean of its divisors is an integer number (206717836000).

Almost surely, 2^{12515323052322} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12515323052322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14883684192000).

12515323052322 is an abundant number, since it is smaller than the sum of its proper divisors (17252045331678).

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

12515323052322 is a wasteful number, since it uses less digits than its factorization.

12515323052322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85441 (or 85421 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The spelling of 12515323052322 in words is "twelve trillion, five hundred fifteen billion, three hundred twenty-three million, fifty-two thousand, three hundred twenty-two".