2099745607679 has 2 divisors, whose sum is σ = 2099745607680. Its totient is φ = 2099745607678.

The previous prime is 2099745607607. The next prime is 2099745607697. The reversal of 2099745607679 is 9767065479902.

Together with next prime (2099745607697) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2099745607679 - 2²⁰ = 2099744559103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2099745607879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1049872803839 + 1049872803840.

It is an arithmetic number, because the mean of its divisors is an integer number (1049872803840).

Almost surely, 2^{2099745607679} is an apocalyptic number.

2099745607679 is a deficient number, since it is larger than the sum of its proper divisors (1).

2099745607679 is an equidigital number, since it uses as much as digits as its factorization.

2099745607679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360067680, while the sum is 71.

The spelling of 2099745607679 in words is "two trillion, ninety-nine billion, seven hundred forty-five million, six hundred seven thousand, six hundred seventy-nine".