10001660591 has 48 divisors (see below), whose sum is σ = 11642287104. Its totient is φ = 8538421248.

The previous prime is 10001660573. The next prime is 10001660651. The reversal of 10001660591 is 19506610001.

10001660591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10001660591 - 2³⁰ = 8927918767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001660521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 57812981 + ... + 57813153.

It is an arithmetic number, because the mean of its divisors is an integer number (242547648).

Almost surely, 2^10001660591 is an apocalyptic number.

10001660591 is a deficient number, since it is larger than the sum of its proper divisors (1640626513).

10001660591 is a wasteful number, since it uses less digits than its factorization.

10001660591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448 (or 429 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 29.

The spelling of 10001660591 in words is "ten billion, one million, six hundred sixty thousand, five hundred ninety-one".