16966696474261 has 2 divisors, whose sum is σ = 16966696474262. Its totient is φ = 16966696474260.

The previous prime is 16966696474237. The next prime is 16966696474289. The reversal of 16966696474261 is 16247469666961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16966696474225 + 36 = 4119065^2 + 6^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16966696474261 is a prime.

It is a super-2 number, since 2×16966696474261² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16966696474661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8483348237130 + 8483348237131.

It is an arithmetic number, because the mean of its divisors is an integer number (8483348237131).

Almost surely, 2^{16966696474261} is an apocalyptic number.

It is an amenable number.

16966696474261 is a deficient number, since it is larger than the sum of its proper divisors (1).

16966696474261 is an equidigital number, since it uses as much as digits as its factorization.

16966696474261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 846526464, while the sum is 73.

The spelling of 16966696474261 in words is "sixteen trillion, nine hundred sixty-six billion, six hundred ninety-six million, four hundred seventy-four thousand, two hundred sixty-one".