10449985691 has 2 divisors, whose sum is σ = 10449985692. Its totient is φ = 10449985690.

The previous prime is 10449985649. The next prime is 10449985717. The reversal of 10449985691 is 19658994401.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10449985691 - 2¹⁸ = 10449723547 is a prime.

It is not a weakly prime, because it can be changed into another prime (10449985891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5224992845 + 5224992846.

It is an arithmetic number, because the mean of its divisors is an integer number (5224992846).

Almost surely, 2^10449985691 is an apocalyptic number.

10449985691 is a deficient number, since it is larger than the sum of its proper divisors (1).

10449985691 is an equidigital number, since it uses as much as digits as its factorization.

10449985691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2799360, while the sum is 56.

The spelling of 10449985691 in words is "ten billion, four hundred forty-nine million, nine hundred eighty-five thousand, six hundred ninety-one".