999995263801 has 2 divisors, whose sum is σ = 999995263802. Its totient is φ = 999995263800.

The previous prime is 999995263793. The next prime is 999995263807. The reversal of 999995263801 is 108362599999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 972265021225 + 27730242576 = 986035^2 + 166524^2 .

It is a cyclic number.

It is not a de Polignac number, because 999995263801 - 2³ = 999995263793 is a prime.

It is not a weakly prime, because it can be changed into another prime (999995263807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499997631900 + 499997631901.

It is an arithmetic number, because the mean of its divisors is an integer number (499997631901).

Almost surely, 2^999995263801 is an apocalyptic number.

It is an amenable number.

999995263801 is a deficient number, since it is larger than the sum of its proper divisors (1).

999995263801 is an equidigital number, since it uses as much as digits as its factorization.

999995263801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 85030560, while the sum is 70.

The spelling of 999995263801 in words is "nine hundred ninety-nine billion, nine hundred ninety-five million, two hundred sixty-three thousand, eight hundred one".