15122089391 has 2 divisors, whose sum is σ = 15122089392. Its totient is φ = 15122089390.

The previous prime is 15122089363. The next prime is 15122089393. The reversal of 15122089391 is 19398022151.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15122089391 is a prime.

Together with 15122089393, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15122089393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7561044695 + 7561044696.

It is an arithmetic number, because the mean of its divisors is an integer number (7561044696).

Almost surely, 2^15122089391 is an apocalyptic number.

15122089391 is a deficient number, since it is larger than the sum of its proper divisors (1).

15122089391 is an equidigital number, since it uses as much as digits as its factorization.

15122089391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 41.

The spelling of 15122089391 in words is "fifteen billion, one hundred twenty-two million, eighty-nine thousand, three hundred ninety-one".