9671403372571 has 2 divisors, whose sum is σ = 9671403372572. Its totient is φ = 9671403372570.

The previous prime is 9671403372497. The next prime is 9671403372593. The reversal of 9671403372571 is 1752733041769.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9671403372571 - 2⁷ = 9671403372443 is a prime.

It is not a weakly prime, because it can be changed into another prime (9671403372671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4835701686285 + 4835701686286.

It is an arithmetic number, because the mean of its divisors is an integer number (4835701686286).

Almost surely, 2^{9671403372571} is an apocalyptic number.

9671403372571 is a deficient number, since it is larger than the sum of its proper divisors (1).

9671403372571 is an equidigital number, since it uses as much as digits as its factorization.

9671403372571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6667920, while the sum is 55.

The spelling of 9671403372571 in words is "nine trillion, six hundred seventy-one billion, four hundred three million, three hundred seventy-two thousand, five hundred seventy-one".