6651611433191 has 2 divisors, whose sum is σ = 6651611433192. Its totient is φ = 6651611433190.

The previous prime is 6651611433121. The next prime is 6651611433349. The reversal of 6651611433191 is 1913341161566.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6651611433191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6651611433121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3325805716595 + 3325805716596.

It is an arithmetic number, because the mean of its divisors is an integer number (3325805716596).

Almost surely, 2^{6651611433191} is an apocalyptic number.

6651611433191 is a deficient number, since it is larger than the sum of its proper divisors (1).

6651611433191 is an equidigital number, since it uses as much as digits as its factorization.

6651611433191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 349920, while the sum is 47.

The spelling of 6651611433191 in words is "six trillion, six hundred fifty-one billion, six hundred eleven million, four hundred thirty-three thousand, one hundred ninety-one".