16309726793 has 2 divisors, whose sum is σ = 16309726794. Its totient is φ = 16309726792.

The previous prime is 16309726717. The next prime is 16309726843. The reversal of 16309726793 is 39762790361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10797703744 + 5512023049 = 103912^2 + 74243^2 .

It is a cyclic number.

It is not a de Polignac number, because 16309726793 - 2²⁴ = 16292949577 is a prime.

It is not a weakly prime, because it can be changed into another prime (16309726193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8154863396 + 8154863397.

It is an arithmetic number, because the mean of its divisors is an integer number (8154863397).

Almost surely, 2^16309726793 is an apocalyptic number.

It is an amenable number.

16309726793 is a deficient number, since it is larger than the sum of its proper divisors (1).

16309726793 is an equidigital number, since it uses as much as digits as its factorization.

16309726793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2571912, while the sum is 53.

The spelling of 16309726793 in words is "sixteen billion, three hundred nine million, seven hundred twenty-six thousand, seven hundred ninety-three".