16279268861 has 2 divisors, whose sum is σ = 16279268862. Its totient is φ = 16279268860.

The previous prime is 16279268857. The next prime is 16279268869. The reversal of 16279268861 is 16886297261.

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., 13809775225 + 2469493636 = 117515^2 + 49694^2 .

It is a cyclic number.

It is not a de Polignac number, because 16279268861 - 2² = 16279268857 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16279268797 and 16279268806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16279268869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8139634430 + 8139634431.

It is an arithmetic number, because the mean of its divisors is an integer number (8139634431).

Almost surely, 2^16279268861 is an apocalyptic number.

It is an amenable number.

16279268861 is a deficient number, since it is larger than the sum of its proper divisors (1).

16279268861 is an equidigital number, since it uses as much as digits as its factorization.

16279268861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3483648, while the sum is 56.

The spelling of 16279268861 in words is "sixteen billion, two hundred seventy-nine million, two hundred sixty-eight thousand, eight hundred sixty-one".