15213134521215 has 48 divisors (see below), whose sum is σ = 26573604197088. Its totient is φ = 8050990940928.

The previous prime is 15213134521141. The next prime is 15213134521237. The reversal of 15213134521215 is 51212543131251.

15213134521215 is a `hidden beast` number, since 1 + 52 + 1 + 31 + 3 + 452 + 121 + 5 = 666.

It is not a de Polignac number, because 15213134521215 - 2⁸ = 15213134520959 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15213134521215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3709812 + ... + 6647478.

It is an arithmetic number, because the mean of its divisors is an integer number (553616754106).

Almost surely, 2^{15213134521215} is an apocalyptic number.

15213134521215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15213134521215 is a deficient number, since it is larger than the sum of its proper divisors (11360469675873).

15213134521215 is a wasteful number, since it uses less digits than its factorization.

15213134521215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2938568 (or 2938565 counting only the distinct ones).

The product of its digits is 36000, while the sum is 36.

Adding to 15213134521215 its reverse (51212543131251), we get a palindrome (66425677652466).

The spelling of 15213134521215 in words is "fifteen trillion, two hundred thirteen billion, one hundred thirty-four million, five hundred twenty-one thousand, two hundred fifteen".