2691002665459 has 2 divisors, whose sum is σ = 2691002665460. Its totient is φ = 2691002665458.

The previous prime is 2691002665369. The next prime is 2691002665517. The reversal of 2691002665459 is 9545662001962.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2691002665459 - 2²⁹ = 2690465794547 is a prime.

It is not a weakly prime, because it can be changed into another prime (2691002365459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1345501332729 + 1345501332730.

It is an arithmetic number, because the mean of its divisors is an integer number (1345501332730).

Almost surely, 2^{2691002665459} is an apocalyptic number.

2691002665459 is a deficient number, since it is larger than the sum of its proper divisors (1).

2691002665459 is an equidigital number, since it uses as much as digits as its factorization.

2691002665459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6998400, while the sum is 55.

The spelling of 2691002665459 in words is "two trillion, six hundred ninety-one billion, two million, six hundred sixty-five thousand, four hundred fifty-nine".