16994961601 has 2 divisors, whose sum is σ = 16994961602. Its totient is φ = 16994961600.

The previous prime is 16994961587. The next prime is 16994961631. The reversal of 16994961601 is 10616949961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10035230976 + 6959730625 = 100176^2 + 83425^2 .

It is a cyclic number.

It is not a de Polignac number, because 16994961601 - 2²⁷ = 16860743873 is a prime.

It is not a weakly prime, because it can be changed into another prime (16994961631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8497480800 + 8497480801.

It is an arithmetic number, because the mean of its divisors is an integer number (8497480801).

Almost surely, 2^16994961601 is an apocalyptic number.

It is an amenable number.

16994961601 is a deficient number, since it is larger than the sum of its proper divisors (1).

16994961601 is an equidigital number, since it uses as much as digits as its factorization.

16994961601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 629856, while the sum is 52.

The spelling of 16994961601 in words is "sixteen billion, nine hundred ninety-four million, nine hundred sixty-one thousand, six hundred one".