17849495846761 has 2 divisors, whose sum is σ = 17849495846762. Its totient is φ = 17849495846760.

The previous prime is 17849495846621. The next prime is 17849495846851. The reversal of 17849495846761 is 16764859494871.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12876930341136 + 4972565505625 = 3588444^2 + 2229925^2 .

It is a cyclic number.

It is not a de Polignac number, because 17849495846761 - 2²¹ = 17849493749609 is a prime.

It is a super-2 number, since 2×17849495846761² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (17849495856761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8924747923380 + 8924747923381.

It is an arithmetic number, because the mean of its divisors is an integer number (8924747923381).

Almost surely, 2^{17849495846761} is an apocalyptic number.

It is an amenable number.

17849495846761 is a deficient number, since it is larger than the sum of its proper divisors (1).

17849495846761 is an equidigital number, since it uses as much as digits as its factorization.

17849495846761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2926264320, while the sum is 79.

The spelling of 17849495846761 in words is "seventeen trillion, eight hundred forty-nine billion, four hundred ninety-five million, eight hundred forty-six thousand, seven hundred sixty-one".