245332164491 has 2 divisors, whose sum is σ = 245332164492. Its totient is φ = 245332164490.

The previous prime is 245332164433. The next prime is 245332164503. The reversal of 245332164491 is 194461233542.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245332164491 - 2³⁴ = 228152295307 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (245332164391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122666082245 + 122666082246.

It is an arithmetic number, because the mean of its divisors is an integer number (122666082246).

Almost surely, 2^245332164491 is an apocalyptic number.

245332164491 is a deficient number, since it is larger than the sum of its proper divisors (1).

245332164491 is an equidigital number, since it uses as much as digits as its factorization.

245332164491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 44.

The spelling of 245332164491 in words is "two hundred forty-five billion, three hundred thirty-two million, one hundred sixty-four thousand, four hundred ninety-one".