16888092217861 has 2 divisors, whose sum is σ = 16888092217862. Its totient is φ = 16888092217860.

The previous prime is 16888092217837. The next prime is 16888092217967. The reversal of 16888092217861 is 16871229088861.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16372697449761 + 515394768100 = 4046319^2 + 717910^2 .

It is a cyclic number.

It is not a de Polignac number, because 16888092217861 - 2³³ = 16879502283269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16888092217261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8444046108930 + 8444046108931.

It is an arithmetic number, because the mean of its divisors is an integer number (8444046108931).

Almost surely, 2^{16888092217861} is an apocalyptic number.

It is an amenable number.

16888092217861 is a deficient number, since it is larger than the sum of its proper divisors (1).

16888092217861 is an equidigital number, since it uses as much as digits as its factorization.

16888092217861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37158912, while the sum is 67.

The spelling of 16888092217861 in words is "sixteen trillion, eight hundred eighty-eight billion, ninety-two million, two hundred seventeen thousand, eight hundred sixty-one".