245365452391 has 2 divisors, whose sum is σ = 245365452392. Its totient is φ = 245365452390.

The previous prime is 245365452247. The next prime is 245365452433. The reversal of 245365452391 is 193254563542.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245365452391 - 2¹⁷ = 245365321319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245365452791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122682726195 + 122682726196.

It is an arithmetic number, because the mean of its divisors is an integer number (122682726196).

Almost surely, 2^245365452391 is an apocalyptic number.

245365452391 is a deficient number, since it is larger than the sum of its proper divisors (1).

245365452391 is an equidigital number, since it uses as much as digits as its factorization.

245365452391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888000, while the sum is 49.

The spelling of 245365452391 in words is "two hundred forty-five billion, three hundred sixty-five million, four hundred fifty-two thousand, three hundred ninety-one".