991466356807 has 2 divisors, whose sum is σ = 991466356808. Its totient is φ = 991466356806.

The previous prime is 991466356763. The next prime is 991466356841. The reversal of 991466356807 is 708653664199.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-991466356807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (991466351807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495733178403 + 495733178404.

It is an arithmetic number, because the mean of its divisors is an integer number (495733178404).

Almost surely, 2^991466356807 is an apocalyptic number.

991466356807 is a deficient number, since it is larger than the sum of its proper divisors (1).

991466356807 is an equidigital number, since it uses as much as digits as its factorization.

991466356807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58786560, while the sum is 64.

The spelling of 991466356807 in words is "nine hundred ninety-one billion, four hundred sixty-six million, three hundred fifty-six thousand, eight hundred seven".