10303999985 has 8 divisors (see below), whose sum is σ = 12377207976. Its totient is φ = 8234928000.

The previous prime is 10303999969. The next prime is 10303999987. The reversal of 10303999985 is 58999930301.

It can be written as a sum of positive squares in 4 ways, for example, as 387026929 + 9916973056 = 19673^2 + 99584^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10303999985 - 2⁴ = 10303999969 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 10303999985.

It is not an unprimeable number, because it can be changed into a prime (10303999987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1028516 + ... + 1038485.

It is an arithmetic number, because the mean of its divisors is an integer number (1547150997).

Almost surely, 2^10303999985 is an apocalyptic number.

It is an amenable number.

10303999985 is a deficient number, since it is larger than the sum of its proper divisors (2073207991).

10303999985 is an equidigital number, since it uses as much as digits as its factorization.

10303999985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2068003.

The product of its (nonzero) digits is 2361960, while the sum is 56.

The spelling of 10303999985 in words is "ten billion, three hundred three million, nine hundred ninety-nine thousand, nine hundred eighty-five".