6635428571 has 2 divisors, whose sum is σ = 6635428572. Its totient is φ = 6635428570.

The previous prime is 6635428543. The next prime is 6635428589. The reversal of 6635428571 is 1758245366.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6635428571 - 2¹⁸ = 6635166427 is a prime.

It is not a weakly prime, because it can be changed into another prime (6635428871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3317714285 + 3317714286.

It is an arithmetic number, because the mean of its divisors is an integer number (3317714286).

Almost surely, 2^6635428571 is an apocalyptic number.

6635428571 is a deficient number, since it is larger than the sum of its proper divisors (1).

6635428571 is an equidigital number, since it uses as much as digits as its factorization.

6635428571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1209600, while the sum is 47.

The square root of 6635428571 is about 81458.1399922684. The cubic root of 6635428571 is about 1879.1278370204.

The spelling of 6635428571 in words is "six billion, six hundred thirty-five million, four hundred twenty-eight thousand, five hundred seventy-one".