15215234257147 has 2 divisors, whose sum is σ = 15215234257148. Its totient is φ = 15215234257146.

The previous prime is 15215234257109. The next prime is 15215234257159. The reversal of 15215234257147 is 74175243251251.

15215234257147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (74175243251251) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15215234257147 - 2³⁵ = 15180874518779 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15215234257147.

It is not a weakly prime, because it can be changed into another prime (15215234255147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7607617128573 + 7607617128574.

It is an arithmetic number, because the mean of its divisors is an integer number (7607617128574).

Almost surely, 2^{15215234257147} is an apocalyptic number.

15215234257147 is a deficient number, since it is larger than the sum of its proper divisors (1).

15215234257147 is an equidigital number, since it uses as much as digits as its factorization.

15215234257147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2352000, while the sum is 49.

The spelling of 15215234257147 in words is "fifteen trillion, two hundred fifteen billion, two hundred thirty-four million, two hundred fifty-seven thousand, one hundred forty-seven".