10911820647 has 32 divisors (see below), whose sum is σ = 18343342080. Its totient is φ = 5615297280.

The previous prime is 10911820607. The next prime is 10911820681. The reversal of 10911820647 is 74602811901.

10911820647 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 10911820647 - 2¹⁹ = 10911296359 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10911820607) 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 31 ways as a sum of consecutive naturals, for example, 476247 + ... + 498632.

It is an arithmetic number, because the mean of its divisors is an integer number (573229440).

Almost surely, 2^10911820647 is an apocalyptic number.

10911820647 is a deficient number, since it is larger than the sum of its proper divisors (7431521433).

10911820647 is a wasteful number, since it uses less digits than its factorization.

10911820647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974943.

The product of its (nonzero) digits is 24192, while the sum is 39.

The spelling of 10911820647 in words is "ten billion, nine hundred eleven million, eight hundred twenty thousand, six hundred forty-seven".