99312411421409 has 2 divisors, whose sum is σ = 99312411421410. Its totient is φ = 99312411421408.

The previous prime is 99312411421397. The next prime is 99312411421423. The reversal of 99312411421409 is 90412411421399.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51529713696400 + 47782697725009 = 7178420^2 + 6912503^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99312411421409 is a prime.

It is not a weakly prime, because it can be changed into another prime (99312411421429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49656205710704 + 49656205710705.

It is an arithmetic number, because the mean of its divisors is an integer number (49656205710705).

Almost surely, 2^{99312411421409} is an apocalyptic number.

It is an amenable number.

99312411421409 is a deficient number, since it is larger than the sum of its proper divisors (1).

99312411421409 is an equidigital number, since it uses as much as digits as its factorization.

99312411421409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 559872, while the sum is 50.

The spelling of 99312411421409 in words is "ninety-nine trillion, three hundred twelve billion, four hundred eleven million, four hundred twenty-one thousand, four hundred nine".