16704144397 has 2 divisors, whose sum is σ = 16704144398. Its totient is φ = 16704144396.

The previous prime is 16704144389. The next prime is 16704144409. The reversal of 16704144397 is 79344140761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16178313636 + 525830761 = 127194^2 + 22931^2 .

It is a cyclic number.

It is not a de Polignac number, because 16704144397 - 2³ = 16704144389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16704144337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8352072198 + 8352072199.

It is an arithmetic number, because the mean of its divisors is an integer number (8352072199).

Almost surely, 2^16704144397 is an apocalyptic number.

It is an amenable number.

16704144397 is a deficient number, since it is larger than the sum of its proper divisors (1).

16704144397 is an equidigital number, since it uses as much as digits as its factorization.

16704144397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 508032, while the sum is 46.

The spelling of 16704144397 in words is "sixteen billion, seven hundred four million, one hundred forty-four thousand, three hundred ninety-seven".