19716610453 has 2 divisors, whose sum is σ = 19716610454. Its totient is φ = 19716610452.

The previous prime is 19716610439. The next prime is 19716610477. The reversal of 19716610453 is 35401661791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9966627889 + 9749982564 = 99833^2 + 98742^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19716610453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19716610853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9858305226 + 9858305227.

It is an arithmetic number, because the mean of its divisors is an integer number (9858305227).

Almost surely, 2^19716610453 is an apocalyptic number.

It is an amenable number.

19716610453 is a deficient number, since it is larger than the sum of its proper divisors (1).

19716610453 is an equidigital number, since it uses as much as digits as its factorization.

19716610453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 43.

The spelling of 19716610453 in words is "nineteen billion, seven hundred sixteen million, six hundred ten thousand, four hundred fifty-three".