8260609166591 has 2 divisors, whose sum is σ = 8260609166592. Its totient is φ = 8260609166590.

The previous prime is 8260609166587. The next prime is 8260609166611. The reversal of 8260609166591 is 1956619060628.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8260609166591 - 2² = 8260609166587 is a prime.

It is a super-2 number, since 2×8260609166591² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8260609166591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8260609166561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4130304583295 + 4130304583296.

It is an arithmetic number, because the mean of its divisors is an integer number (4130304583296).

Almost surely, 2^{8260609166591} is an apocalyptic number.

8260609166591 is a deficient number, since it is larger than the sum of its proper divisors (1).

8260609166591 is an equidigital number, since it uses as much as digits as its factorization.

8260609166591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8398080, while the sum is 59.

The spelling of 8260609166591 in words is "eight trillion, two hundred sixty billion, six hundred nine million, one hundred sixty-six thousand, five hundred ninety-one".