16604366453 has 2 divisors, whose sum is σ = 16604366454. Its totient is φ = 16604366452.

The previous prime is 16604366431. The next prime is 16604366479. The reversal of 16604366453 is 35466340661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16584803524 + 19562929 = 128782^2 + 4423^2 .

It is a cyclic number.

It is not a de Polignac number, because 16604366453 - 2¹⁰ = 16604365429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16604366483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8302183226 + 8302183227.

It is an arithmetic number, because the mean of its divisors is an integer number (8302183227).

Almost surely, 2^16604366453 is an apocalyptic number.

It is an amenable number.

16604366453 is a deficient number, since it is larger than the sum of its proper divisors (1).

16604366453 is an equidigital number, since it uses as much as digits as its factorization.

16604366453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 933120, while the sum is 44.

The spelling of 16604366453 in words is "sixteen billion, six hundred four million, three hundred sixty-six thousand, four hundred fifty-three".