10391943673 has 2 divisors, whose sum is σ = 10391943674. Its totient is φ = 10391943672.

The previous prime is 10391943649. The next prime is 10391943739. The reversal of 10391943673 is 37634919301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9748205289 + 643738384 = 98733^2 + 25372^2 .

It is a cyclic number.

It is not a de Polignac number, because 10391943673 - 2⁵ = 10391943641 is a prime.

It is not a weakly prime, because it can be changed into another prime (10391943623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5195971836 + 5195971837.

It is an arithmetic number, because the mean of its divisors is an integer number (5195971837).

Almost surely, 2^10391943673 is an apocalyptic number.

It is an amenable number.

10391943673 is a deficient number, since it is larger than the sum of its proper divisors (1).

10391943673 is an equidigital number, since it uses as much as digits as its factorization.

10391943673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 367416, while the sum is 46.

The spelling of 10391943673 in words is "ten billion, three hundred ninety-one million, nine hundred forty-three thousand, six hundred seventy-three".