2571128647 has 2 divisors, whose sum is σ = 2571128648. Its totient is φ = 2571128646.

The previous prime is 2571128629. The next prime is 2571128683. The reversal of 2571128647 is 7468211752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2571128647 - 2⁷ = 2571128519 is a prime.

It is a super-2 number, since 2×2571128647² = 13221405038848101218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2571128617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1285564323 + 1285564324.

It is an arithmetic number, because the mean of its divisors is an integer number (1285564324).

Almost surely, 2^2571128647 is an apocalyptic number.

2571128647 is a deficient number, since it is larger than the sum of its proper divisors (1).

2571128647 is an equidigital number, since it uses as much as digits as its factorization.

2571128647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 188160, while the sum is 43.

The square root of 2571128647 is about 50706.2979027260. The cubic root of 2571128647 is about 1369.9601542392.

The spelling of 2571128647 in words is "two billion, five hundred seventy-one million, one hundred twenty-eight thousand, six hundred forty-seven".