16001477309 has 2 divisors, whose sum is σ = 16001477310. Its totient is φ = 16001477308.

The previous prime is 16001477299. The next prime is 16001477311. The reversal of 16001477309 is 90377410061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9177065209 + 6824412100 = 95797^2 + 82610^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16001477309 is a prime.

Together with 16001477311, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16001477509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8000738654 + 8000738655.

It is an arithmetic number, because the mean of its divisors is an integer number (8000738655).

Almost surely, 2^16001477309 is an apocalyptic number.

It is an amenable number.

16001477309 is a deficient number, since it is larger than the sum of its proper divisors (1).

16001477309 is an equidigital number, since it uses as much as digits as its factorization.

16001477309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 38.

The spelling of 16001477309 in words is "sixteen billion, one million, four hundred seventy-seven thousand, three hundred nine".