2641360681 has 2 divisors, whose sum is σ = 2641360682. Its totient is φ = 2641360680.

The previous prime is 2641360663. The next prime is 2641360691. The reversal of 2641360681 is 1860631462.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1954082025 + 687278656 = 44205^2 + 26216^2 .

It is a cyclic number.

It is not a de Polignac number, because 2641360681 - 2¹⁷ = 2641229609 is a prime.

It is a super-2 number, since 2×2641360681² = 13953572494265567522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2641360681.

It is not a weakly prime, because it can be changed into another prime (2641360691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1320680340 + 1320680341.

It is an arithmetic number, because the mean of its divisors is an integer number (1320680341).

Almost surely, 2^2641360681 is an apocalyptic number.

It is an amenable number.

2641360681 is a deficient number, since it is larger than the sum of its proper divisors (1).

2641360681 is an equidigital number, since it uses as much as digits as its factorization.

2641360681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 2641360681 is about 51394.1697179748. The cubic root of 2641360681 is about 1382.3220517247.

The spelling of 2641360681 in words is "two billion, six hundred forty-one million, three hundred sixty thousand, six hundred eighty-one".