7981047271 has 2 divisors, whose sum is σ = 7981047272. Its totient is φ = 7981047270.

The previous prime is 7981047257. The next prime is 7981047313. The reversal of 7981047271 is 1727401897.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7981047271 - 2¹¹ = 7981045223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7981047211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3990523635 + 3990523636.

It is an arithmetic number, because the mean of its divisors is an integer number (3990523636).

Almost surely, 2^7981047271 is an apocalyptic number.

7981047271 is a deficient number, since it is larger than the sum of its proper divisors (1).

7981047271 is an equidigital number, since it uses as much as digits as its factorization.

7981047271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 197568, while the sum is 46.

The square root of 7981047271 is about 89336.7072988478. The cubic root of 7981047271 is about 1998.4193570297.

The spelling of 7981047271 in words is "seven billion, nine hundred eighty-one million, forty-seven thousand, two hundred seventy-one".