16306720427 has 2 divisors, whose sum is σ = 16306720428. Its totient is φ = 16306720426.

The previous prime is 16306720393. The next prime is 16306720439. The reversal of 16306720427 is 72402760361.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16306720427 is a prime.

It is not a weakly prime, because it can be changed into another prime (16306726427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8153360213 + 8153360214.

It is an arithmetic number, because the mean of its divisors is an integer number (8153360214).

Almost surely, 2^16306720427 is an apocalyptic number.

16306720427 is a deficient number, since it is larger than the sum of its proper divisors (1).

16306720427 is an equidigital number, since it uses as much as digits as its factorization.

16306720427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 38.

The spelling of 16306720427 in words is "sixteen billion, three hundred six million, seven hundred twenty thousand, four hundred twenty-seven".