6651136571 has 2 divisors, whose sum is σ = 6651136572. Its totient is φ = 6651136570.

The previous prime is 6651136549. The next prime is 6651136577. The reversal of 6651136571 is 1756311566.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6651136571 - 2¹⁴ = 6651120187 is a prime.

It is not a weakly prime, because it can be changed into another prime (6651136577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3325568285 + 3325568286.

It is an arithmetic number, because the mean of its divisors is an integer number (3325568286).

Almost surely, 2^6651136571 is an apocalyptic number.

6651136571 is a deficient number, since it is larger than the sum of its proper divisors (1).

6651136571 is an equidigital number, since it uses as much as digits as its factorization.

6651136571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113400, while the sum is 41.

The square root of 6651136571 is about 81554.5006176851. The cubic root of 6651136571 is about 1880.6094835221.

The spelling of 6651136571 in words is "six billion, six hundred fifty-one million, one hundred thirty-six thousand, five hundred seventy-one".