10327991905 has 36 divisors (see below), whose sum is σ = 15846867540. Its totient is φ = 6438210240.

The previous prime is 10327991903. The next prime is 10327991909. The reversal of 10327991905 is 50919972301.

It can be written as a sum of positive squares in 2 ways, for example, as 8019381601 + 2308610304 = 89551^2 + 48048^2 .

It is not a de Polignac number, because 10327991905 - 2¹ = 10327991903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10327991903) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 144550 + ... + 203839.

It is an arithmetic number, because the mean of its divisors is an integer number (440190765).

Almost surely, 2^10327991905 is an apocalyptic number.

It is an amenable number.

10327991905 is a deficient number, since it is larger than the sum of its proper divisors (5518875635).

10327991905 is a wasteful number, since it uses less digits than its factorization.

10327991905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348430 (or 348412 counting only the distinct ones).

The product of its (nonzero) digits is 153090, while the sum is 46.

The spelling of 10327991905 in words is "ten billion, three hundred twenty-seven million, nine hundred ninety-one thousand, nine hundred five".