16397704201 has 2 divisors, whose sum is σ = 16397704202. Its totient is φ = 16397704200.

The previous prime is 16397704171. The next prime is 16397704307. The reversal of 16397704201 is 10240779361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14628660601 + 1769043600 = 120949^2 + 42060^2 .

It is a cyclic number.

It is not a de Polignac number, because 16397704201 - 2⁷ = 16397704073 is a prime.

It is not a weakly prime, because it can be changed into another prime (16397704601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8198852100 + 8198852101.

It is an arithmetic number, because the mean of its divisors is an integer number (8198852101).

Almost surely, 2^16397704201 is an apocalyptic number.

It is an amenable number.

16397704201 is a deficient number, since it is larger than the sum of its proper divisors (1).

16397704201 is an equidigital number, since it uses as much as digits as its factorization.

16397704201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 40.

The spelling of 16397704201 in words is "sixteen billion, three hundred ninety-seven million, seven hundred four thousand, two hundred one".