16886121701 has 2 divisors, whose sum is σ = 16886121702. Its totient is φ = 16886121700.

The previous prime is 16886121697. The next prime is 16886121719. The reversal of 16886121701 is 10712168861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12734896801 + 4151224900 = 112849^2 + 64430^2 .

It is an emirp because it is prime and its reverse (10712168861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16886121701 - 2² = 16886121697 is a prime.

It is a super-2 number, since 2×16886121701² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16886121751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8443060850 + 8443060851.

It is an arithmetic number, because the mean of its divisors is an integer number (8443060851).

Almost surely, 2^16886121701 is an apocalyptic number.

It is an amenable number.

16886121701 is a deficient number, since it is larger than the sum of its proper divisors (1).

16886121701 is an equidigital number, since it uses as much as digits as its factorization.

16886121701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 41.

The spelling of 16886121701 in words is "sixteen billion, eight hundred eighty-six million, one hundred twenty-one thousand, seven hundred one".