7871022653 has 16 divisors (see below), whose sum is σ = 8601793200. Its totient is φ = 7158896640.

The previous prime is 7871022641. The next prime is 7871022701. The reversal of 7871022653 is 3562201787.

It can be written as a sum of positive squares in 8 ways, for example, as 59644729 + 7811377924 = 7723^2 + 88382^2 .

It is a cyclic number.

It is not a de Polignac number, because 7871022653 - 2⁴ = 7871022637 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7871022653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7871022353) 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 15 ways as a sum of consecutive naturals, for example, 241133 + ... + 271821.

It is an arithmetic number, because the mean of its divisors is an integer number (537612075).

Almost surely, 2^7871022653 is an apocalyptic number.

It is an amenable number.

7871022653 is a deficient number, since it is larger than the sum of its proper divisors (730770547).

7871022653 is a wasteful number, since it uses less digits than its factorization.

7871022653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30992.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 7871022653 is about 88718.7841046077. The cubic root of 7871022653 is about 1989.1936038134.

The spelling of 7871022653 in words is "seven billion, eight hundred seventy-one million, twenty-two thousand, six hundred fifty-three".