2623597747691 has 2 divisors, whose sum is σ = 2623597747692. Its totient is φ = 2623597747690.

The previous prime is 2623597747649. The next prime is 2623597747721. The reversal of 2623597747691 is 1967477953262.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2623597747691 - 2³⁴ = 2606417878507 is a prime.

It is not a weakly prime, because it can be changed into another prime (2623597747291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1311798873845 + 1311798873846.

It is an arithmetic number, because the mean of its divisors is an integer number (1311798873846).

Almost surely, 2^{2623597747691} is an apocalyptic number.

2623597747691 is a deficient number, since it is larger than the sum of its proper divisors (1).

2623597747691 is an equidigital number, since it uses as much as digits as its factorization.

2623597747691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240045120, while the sum is 68.

The spelling of 2623597747691 in words is "two trillion, six hundred twenty-three billion, five hundred ninety-seven million, seven hundred forty-seven thousand, six hundred ninety-one".