12170150591 has 2 divisors, whose sum is σ = 12170150592. Its totient is φ = 12170150590.

The previous prime is 12170150549. The next prime is 12170150623. The reversal of 12170150591 is 19505107121.

It is a happy number.

It is an a-pointer prime, because the next prime (12170150623) can be obtained adding 12170150591 to its sum of digits (32).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12170150591 - 2³⁰ = 11096408767 is a prime.

It is a super-2 number, since 2×12170150591² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12170150521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6085075295 + 6085075296.

It is an arithmetic number, because the mean of its divisors is an integer number (6085075296).

Almost surely, 2^12170150591 is an apocalyptic number.

12170150591 is a deficient number, since it is larger than the sum of its proper divisors (1).

12170150591 is an equidigital number, since it uses as much as digits as its factorization.

12170150591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3150, while the sum is 32.

The spelling of 12170150591 in words is "twelve billion, one hundred seventy million, one hundred fifty thousand, five hundred ninety-one".