2108699145769 has 2 divisors, whose sum is σ = 2108699145770. Its totient is φ = 2108699145768.

The previous prime is 2108699145743. The next prime is 2108699145809. The reversal of 2108699145769 is 9675419968012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1508996041744 + 599703104025 = 1228412^2 + 774405^2 .

It is a cyclic number.

It is not a de Polignac number, because 2108699145769 - 2¹⁹ = 2108698621481 is a prime.

It is a super-2 number, since 2×2108699145769² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2108699145869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1054349572884 + 1054349572885.

It is an arithmetic number, because the mean of its divisors is an integer number (1054349572885).

Almost surely, 2^{2108699145769} is an apocalyptic number.

It is an amenable number.

2108699145769 is a deficient number, since it is larger than the sum of its proper divisors (1).

2108699145769 is an equidigital number, since it uses as much as digits as its factorization.

2108699145769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58786560, while the sum is 67.

The spelling of 2108699145769 in words is "two trillion, one hundred eight billion, six hundred ninety-nine million, one hundred forty-five thousand, seven hundred sixty-nine".