7668521271 has 6 divisors (see below), whose sum is σ = 11076752960. Its totient is φ = 5112347508.

The previous prime is 7668521251. The next prime is 7668521299. The reversal of 7668521271 is 1721258667.

It is not a de Polignac number, because 7668521271 - 2⁹ = 7668520759 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 (7668521221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 426028951 + ... + 426028968.

Almost surely, 2^7668521271 is an apocalyptic number.

7668521271 is a deficient number, since it is larger than the sum of its proper divisors (3408231689).

7668521271 is a wasteful number, since it uses less digits than its factorization.

7668521271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852057925 (or 852057922 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 7668521271 is about 87570.0934737425. The cubic root of 7668521271 is about 1971.9862186463.

The spelling of 7668521271 in words is "seven billion, six hundred sixty-eight million, five hundred twenty-one thousand, two hundred seventy-one".