16113631643 has 2 divisors, whose sum is σ = 16113631644. Its totient is φ = 16113631642.

The previous prime is 16113631627. The next prime is 16113631693. The reversal of 16113631643 is 34613631161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16113631643 - 2⁴ = 16113631627 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (16113631693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8056815821 + 8056815822.

It is an arithmetic number, because the mean of its divisors is an integer number (8056815822).

Almost surely, 2^16113631643 is an apocalyptic number.

16113631643 is a deficient number, since it is larger than the sum of its proper divisors (1).

16113631643 is an equidigital number, since it uses as much as digits as its factorization.

16113631643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 35.

The spelling of 16113631643 in words is "sixteen billion, one hundred thirteen million, six hundred thirty-one thousand, six hundred forty-three".