7957275647 has 4 divisors (see below), whose sum is σ = 7959303816. Its totient is φ = 7955247480.

The previous prime is 7957275643. The next prime is 7957275659. The reversal of 7957275647 is 7465727597.

It is a happy number.

7957275647 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7957275647 - 2² = 7957275643 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7957275643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1008188 + ... + 1016049.

It is an arithmetic number, because the mean of its divisors is an integer number (1989825954).

Almost surely, 2^7957275647 is an apocalyptic number.

7957275647 is a deficient number, since it is larger than the sum of its proper divisors (2028169).

7957275647 is a wasteful number, since it uses less digits than its factorization.

7957275647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2028168.

The product of its digits is 25930800, while the sum is 59.

The square root of 7957275647 is about 89203.5629725629. The cubic root of 7957275647 is about 1996.4332802864.

The spelling of 7957275647 in words is "seven billion, nine hundred fifty-seven million, two hundred seventy-five thousand, six hundred forty-seven".