6171485647 has 2 divisors, whose sum is σ = 6171485648. Its totient is φ = 6171485646.

The previous prime is 6171485641. The next prime is 6171485657. The reversal of 6171485647 is 7465841716.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6171485647 is a prime.

It is a super-2 number, since 2×6171485647² = 76174470182254017218, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6171485647.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6171485641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3085742823 + 3085742824.

It is an arithmetic number, because the mean of its divisors is an integer number (3085742824).

Almost surely, 2^6171485647 is an apocalyptic number.

6171485647 is a deficient number, since it is larger than the sum of its proper divisors (1).

6171485647 is an equidigital number, since it uses as much as digits as its factorization.

6171485647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1128960, while the sum is 49.

The square root of 6171485647 is about 78558.8037523485. The cubic root of 6171485647 is about 1834.2699070231.

The spelling of 6171485647 in words is "six billion, one hundred seventy-one million, four hundred eighty-five thousand, six hundred forty-seven".