2641747968569 has 2 divisors, whose sum is σ = 2641747968570. Its totient is φ = 2641747968568.

The previous prime is 2641747968547. The next prime is 2641747968577. The reversal of 2641747968569 is 9658697471462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2619364218025 + 22383750544 = 1618445^2 + 149612^2 .

It is a cyclic number.

It is not a de Polignac number, because 2641747968569 - 2²⁸ = 2641479533113 is a prime.

It is a super-2 number, since 2×2641747968569² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2641747968496 and 2641747968505.

It is not a weakly prime, because it can be changed into another prime (2641747968469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1320873984284 + 1320873984285.

It is an arithmetic number, because the mean of its divisors is an integer number (1320873984285).

Almost surely, 2^{2641747968569} is an apocalyptic number.

It is an amenable number.

2641747968569 is a deficient number, since it is larger than the sum of its proper divisors (1).

2641747968569 is an equidigital number, since it uses as much as digits as its factorization.

2641747968569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1097349120, while the sum is 74.

The spelling of 2641747968569 in words is "two trillion, six hundred forty-one billion, seven hundred forty-seven million, nine hundred sixty-eight thousand, five hundred sixty-nine".