16461465899969 has 2 divisors, whose sum is σ = 16461465899970. Its totient is φ = 16461465899968.

The previous prime is 16461465899947. The next prime is 16461465899999. The reversal of 16461465899969 is 96999856416461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16405740160000 + 55725739969 = 4050400^2 + 236063^2 .

It is a cyclic number.

It is not a de Polignac number, because 16461465899969 - 2¹² = 16461465895873 is a prime.

It is a super-2 number, since 2×16461465899969² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16461465899929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8230732949984 + 8230732949985.

It is an arithmetic number, because the mean of its divisors is an integer number (8230732949985).

Almost surely, 2^{16461465899969} is an apocalyptic number.

It is an amenable number.

16461465899969 is a deficient number, since it is larger than the sum of its proper divisors (1).

16461465899969 is an equidigital number, since it uses as much as digits as its factorization.

16461465899969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5441955840, while the sum is 83.

The spelling of 16461465899969 in words is "sixteen trillion, four hundred sixty-one billion, four hundred sixty-five million, eight hundred ninety-nine thousand, nine hundred sixty-nine".