16119688817 has 2 divisors, whose sum is σ = 16119688818. Its totient is φ = 16119688816.

The previous prime is 16119688771. The next prime is 16119688843. The reversal of 16119688817 is 71888691161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13727402896 + 2392285921 = 117164^2 + 48911^2 .

It is a cyclic number.

It is not a de Polignac number, because 16119688817 - 2⁸ = 16119688561 is a prime.

It is not a weakly prime, because it can be changed into another prime (16119688517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8059844408 + 8059844409.

It is an arithmetic number, because the mean of its divisors is an integer number (8059844409).

Almost surely, 2^16119688817 is an apocalyptic number.

It is an amenable number.

16119688817 is a deficient number, since it is larger than the sum of its proper divisors (1).

16119688817 is an equidigital number, since it uses as much as digits as its factorization.

16119688817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 56.

The spelling of 16119688817 in words is "sixteen billion, one hundred nineteen million, six hundred eighty-eight thousand, eight hundred seventeen".