245316615391 has 2 divisors, whose sum is σ = 245316615392. Its totient is φ = 245316615390.

The previous prime is 245316615353. The next prime is 245316615421. The reversal of 245316615391 is 193516613542.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245316615391 - 2¹⁹ = 245316091103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245316615301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122658307695 + 122658307696.

It is an arithmetic number, because the mean of its divisors is an integer number (122658307696).

Almost surely, 2^245316615391 is an apocalyptic number.

245316615391 is a deficient number, since it is larger than the sum of its proper divisors (1).

245316615391 is an equidigital number, since it uses as much as digits as its factorization.

245316615391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 583200, while the sum is 46.

The spelling of 245316615391 in words is "two hundred forty-five billion, three hundred sixteen million, six hundred fifteen thousand, three hundred ninety-one".