8160647566 has 4 divisors (see below), whose sum is σ = 12240971352. Its totient is φ = 4080323782.

The previous prime is 8160647563. The next prime is 8160647569. The reversal of 8160647566 is 6657460618.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6657460618 = 2 ⋅3328730309.

It is an interprime number because it is at equal distance from previous prime (8160647563) and next prime (8160647569).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8160647563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2040161890 + ... + 2040161893.

It is an arithmetic number, because the mean of its divisors is an integer number (3060242838).

Almost surely, 2^8160647566 is an apocalyptic number.

8160647566 is a deficient number, since it is larger than the sum of its proper divisors (4080323786).

8160647566 is a wasteful number, since it uses less digits than its factorization.

8160647566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4080323785.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The square root of 8160647566 is about 90336.3025920366. The cubic root of 8160647566 is about 2013.2986738097.

The spelling of 8160647566 in words is "eight billion, one hundred sixty million, six hundred forty-seven thousand, five hundred sixty-six".