16354234661 has 2 divisors, whose sum is σ = 16354234662. Its totient is φ = 16354234660.

The previous prime is 16354234613. The next prime is 16354234679. The reversal of 16354234661 is 16643245361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13227300100 + 3126934561 = 115010^2 + 55919^2 .

It is a cyclic number.

It is not a de Polignac number, because 16354234661 - 2¹⁸ = 16353972517 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16354234361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8177117330 + 8177117331.

It is an arithmetic number, because the mean of its divisors is an integer number (8177117331).

Almost surely, 2^16354234661 is an apocalyptic number.

It is an amenable number.

16354234661 is a deficient number, since it is larger than the sum of its proper divisors (1).

16354234661 is an equidigital number, since it uses as much as digits as its factorization.

16354234661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 41.

The spelling of 16354234661 in words is "sixteen billion, three hundred fifty-four million, two hundred thirty-four thousand, six hundred sixty-one".