20312440214399 has 2 divisors, whose sum is σ = 20312440214400. Its totient is φ = 20312440214398.

The previous prime is 20312440214347. The next prime is 20312440214441. The reversal of 20312440214399 is 99341204421302.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20312440214399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20312440216399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10156220107199 + 10156220107200.

It is an arithmetic number, because the mean of its divisors is an integer number (10156220107200).

Almost surely, 2^{20312440214399} is an apocalyptic number.

20312440214399 is a deficient number, since it is larger than the sum of its proper divisors (1).

20312440214399 is an equidigital number, since it uses as much as digits as its factorization.

20312440214399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 44.

The spelling of 20312440214399 in words is "twenty trillion, three hundred twelve billion, four hundred forty million, two hundred fourteen thousand, three hundred ninety-nine".