10320991427 has 2 divisors, whose sum is σ = 10320991428. Its totient is φ = 10320991426.

The previous prime is 10320991403. The next prime is 10320991477. The reversal of 10320991427 is 72419902301.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10320991427 - 2¹⁰ = 10320990403 is a prime.

It is not a weakly prime, because it can be changed into another prime (10320991477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5160495713 + 5160495714.

It is an arithmetic number, because the mean of its divisors is an integer number (5160495714).

Almost surely, 2^10320991427 is an apocalyptic number.

10320991427 is a deficient number, since it is larger than the sum of its proper divisors (1).

10320991427 is an equidigital number, since it uses as much as digits as its factorization.

10320991427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 38.

The spelling of 10320991427 in words is "ten billion, three hundred twenty million, nine hundred ninety-one thousand, four hundred twenty-seven".