16888092217721 has 2 divisors, whose sum is σ = 16888092217722. Its totient is φ = 16888092217720.

The previous prime is 16888092217699. The next prime is 16888092217769. The reversal of 16888092217721 is 12771229088861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8487433422400 + 8400658795321 = 2913320^2 + 2898389^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16888092217721 is a prime.

It is not a weakly prime, because it can be changed into another prime (16888092217771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8444046108860 + 8444046108861.

It is an arithmetic number, because the mean of its divisors is an integer number (8444046108861).

Almost surely, 2^{16888092217721} is an apocalyptic number.

It is an amenable number.

16888092217721 is a deficient number, since it is larger than the sum of its proper divisors (1).

16888092217721 is an equidigital number, since it uses as much as digits as its factorization.

16888092217721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10838016, while the sum is 62.

The spelling of 16888092217721 in words is "sixteen trillion, eight hundred eighty-eight billion, ninety-two million, two hundred seventeen thousand, seven hundred twenty-one".