2506323645191 has 2 divisors, whose sum is σ = 2506323645192. Its totient is φ = 2506323645190.

The previous prime is 2506323645151. The next prime is 2506323645227. The reversal of 2506323645191 is 1915463236052.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2506323645191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2506323645121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1253161822595 + 1253161822596.

It is an arithmetic number, because the mean of its divisors is an integer number (1253161822596).

Almost surely, 2^{2506323645191} is an apocalyptic number.

2506323645191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2506323645191 is an equidigital number, since it uses as much as digits as its factorization.

2506323645191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1166400, while the sum is 47.

The spelling of 2506323645191 in words is "two trillion, five hundred six billion, three hundred twenty-three million, six hundred forty-five thousand, one hundred ninety-one".