7966145567 has 4 divisors (see below), whose sum is σ = 7999476960. Its totient is φ = 7932814176.

The previous prime is 7966145527. The next prime is 7966145569. The reversal of 7966145567 is 7655416697.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7966145567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7966145569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16665338 + ... + 16665815.

It is an arithmetic number, because the mean of its divisors is an integer number (1999869240).

Almost surely, 2^7966145567 is an apocalyptic number.

7966145567 is a deficient number, since it is larger than the sum of its proper divisors (33331393).

7966145567 is a wasteful number, since it uses less digits than its factorization.

7966145567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33331392.

The product of its digits is 9525600, while the sum is 56.

The square root of 7966145567 is about 89253.2664220195. The cubic root of 7966145567 is about 1997.1748082750.

The spelling of 7966145567 in words is "seven billion, nine hundred sixty-six million, one hundred forty-five thousand, five hundred sixty-seven".