8561195147 has 2 divisors, whose sum is σ = 8561195148. Its totient is φ = 8561195146.

The previous prime is 8561195143. The next prime is 8561195173. The reversal of 8561195147 is 7415911658.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8561195147 - 2² = 8561195143 is a prime.

It is not a weakly prime, because it can be changed into another prime (8561195143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4280597573 + 4280597574.

It is an arithmetic number, because the mean of its divisors is an integer number (4280597574).

Almost surely, 2^8561195147 is an apocalyptic number.

8561195147 is a deficient number, since it is larger than the sum of its proper divisors (1).

8561195147 is an equidigital number, since it uses as much as digits as its factorization.

8561195147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 302400, while the sum is 47.

The square root of 8561195147 is about 92526.7266631647. The cubic root of 8561195147 is about 2045.7134421661.

The spelling of 8561195147 in words is "eight billion, five hundred sixty-one million, one hundred ninety-five thousand, one hundred forty-seven".