8081961567 has 16 divisors (see below), whose sum is σ = 10823433600. Its totient is φ = 5364280800.

The previous prime is 8081961523. The next prime is 8081961583. The reversal of 8081961567 is 7651691808.

It is not a de Polignac number, because 8081961567 - 2⁷ = 8081961439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8081960567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 717892 + ... + 729062.

It is an arithmetic number, because the mean of its divisors is an integer number (676464600).

Almost surely, 2^8081961567 is an apocalyptic number.

8081961567 is a deficient number, since it is larger than the sum of its proper divisors (2741472033).

8081961567 is a wasteful number, since it uses less digits than its factorization.

8081961567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12214.

The product of its (nonzero) digits is 725760, while the sum is 51.

The square root of 8081961567 is about 89899.7306280725. The cubic root of 8081961567 is about 2006.8069371040.

The spelling of 8081961567 in words is "eight billion, eighty-one million, nine hundred sixty-one thousand, five hundred sixty-seven".