16500075601663 has 2 divisors, whose sum is σ = 16500075601664. Its totient is φ = 16500075601662.

The previous prime is 16500075601657. The next prime is 16500075601679. The reversal of 16500075601663 is 36610657000561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16500075601663 - 2³⁷ = 16362636648191 is a prime.

It is a super-2 number, since 2×16500075601663² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16500075691663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8250037800831 + 8250037800832.

It is an arithmetic number, because the mean of its divisors is an integer number (8250037800832).

Almost surely, 2^{16500075601663} is an apocalyptic number.

16500075601663 is a deficient number, since it is larger than the sum of its proper divisors (1).

16500075601663 is an equidigital number, since it uses as much as digits as its factorization.

16500075601663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 680400, while the sum is 46.

The spelling of 16500075601663 in words is "sixteen trillion, five hundred billion, seventy-five million, six hundred one thousand, six hundred sixty-three".