16416663553 has 2 divisors, whose sum is σ = 16416663554. Its totient is φ = 16416663552.

The previous prime is 16416663503. The next prime is 16416663577. The reversal of 16416663553 is 35536661461.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16416528129 + 135424 = 128127^2 + 368^2 .

It is a cyclic number.

It is not a de Polignac number, because 16416663553 - 2¹³ = 16416655361 is a prime.

It is not a weakly prime, because it can be changed into another prime (16416663503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8208331776 + 8208331777.

It is an arithmetic number, because the mean of its divisors is an integer number (8208331777).

Almost surely, 2^16416663553 is an apocalyptic number.

It is an amenable number.

16416663553 is a deficient number, since it is larger than the sum of its proper divisors (1).

16416663553 is an equidigital number, since it uses as much as digits as its factorization.

16416663553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1166400, while the sum is 46.

The spelling of 16416663553 in words is "sixteen billion, four hundred sixteen million, six hundred sixty-three thousand, five hundred fifty-three".