15121324135413 has 6 divisors (see below), whose sum is σ = 21841912640054. Its totient is φ = 10080882756936.

The previous prime is 15121324135339. The next prime is 15121324135427. The reversal of 15121324135413 is 31453142312151.

15121324135413 is a `hidden beast` number, since 1 + 5 + 1 + 213 + 24 + 1 + 3 + 5 + 413 = 666.

It can be written as a sum of positive squares in only one way, i.e., 14449904497809 + 671419637604 = 3801303^2 + 819402^2 .

It is not a de Polignac number, because 15121324135413 - 2¹⁴ = 15121324119029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15121324135433) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 840073563070 + ... + 840073563087.

Almost surely, 2^{15121324135413} is an apocalyptic number.

It is an amenable number.

15121324135413 is a deficient number, since it is larger than the sum of its proper divisors (6720588504641).

15121324135413 is a wasteful number, since it uses less digits than its factorization.

15121324135413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680147126163 (or 1680147126160 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

Adding to 15121324135413 its reverse (31453142312151), we get a palindrome (46574466447564).

The spelling of 15121324135413 in words is "fifteen trillion, one hundred twenty-one billion, three hundred twenty-four million, one hundred thirty-five thousand, four hundred thirteen".