16315233643 has 2 divisors, whose sum is σ = 16315233644. Its totient is φ = 16315233642.

The previous prime is 16315233619. The next prime is 16315233647. The reversal of 16315233643 is 34633251361.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16315233643 - 2²¹ = 16313136491 is a prime.

It is not a weakly prime, because it can be changed into another prime (16315233647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8157616821 + 8157616822.

It is an arithmetic number, because the mean of its divisors is an integer number (8157616822).

Almost surely, 2^16315233643 is an apocalyptic number.

16315233643 is a deficient number, since it is larger than the sum of its proper divisors (1).

16315233643 is an equidigital number, since it uses as much as digits as its factorization.

16315233643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 37.

The spelling of 16315233643 in words is "sixteen billion, three hundred fifteen million, two hundred thirty-three thousand, six hundred forty-three".