10243969805 has 4 divisors (see below), whose sum is σ = 12292763772. Its totient is φ = 8195175840.

The previous prime is 10243969789. The next prime is 10243969811. The reversal of 10243969805 is 50896934201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1487876329 + 8756093476 = 38573^2 + 93574^2 .

It is not a de Polignac number, because 10243969805 - 2⁴ = 10243969789 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10243969805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1024396976 + ... + 1024396985.

It is an arithmetic number, because the mean of its divisors is an integer number (3073190943).

Almost surely, 2^10243969805 is an apocalyptic number.

It is an amenable number.

10243969805 is a deficient number, since it is larger than the sum of its proper divisors (2048793967).

10243969805 is an equidigital number, since it uses as much as digits as its factorization.

10243969805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2048793966.

The product of its (nonzero) digits is 466560, while the sum is 47.

The spelling of 10243969805 in words is "ten billion, two hundred forty-three million, nine hundred sixty-nine thousand, eight hundred five".