15065558791 has 2 divisors, whose sum is σ = 15065558792. Its totient is φ = 15065558790.

The previous prime is 15065558789. The next prime is 15065558803. The reversal of 15065558791 is 19785556051.

It is a weak prime.

It is an emirp because it is prime and its reverse (19785556051) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15065558791 - 2¹ = 15065558789 is a prime.

Together with 15065558789, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15065558771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7532779395 + 7532779396.

It is an arithmetic number, because the mean of its divisors is an integer number (7532779396).

Almost surely, 2^15065558791 is an apocalyptic number.

15065558791 is a deficient number, since it is larger than the sum of its proper divisors (1).

15065558791 is an equidigital number, since it uses as much as digits as its factorization.

15065558791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1890000, while the sum is 52.

The spelling of 15065558791 in words is "fifteen billion, sixty-five million, five hundred fifty-eight thousand, seven hundred ninety-one".