8089361681 has 4 divisors (see below), whose sum is σ = 8350308864. Its totient is φ = 7828414500.

The previous prime is 8089361639. The next prime is 8089361723. The reversal of 8089361681 is 1861639808.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (8089361639) and next prime (8089361723).

It is not a de Polignac number, because 8089361681 - 2¹⁸ = 8089099537 is a prime.

It is a super-2 number, since 2×8089361681² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8089361611) 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, 130473545 + ... + 130473606.

It is an arithmetic number, because the mean of its divisors is an integer number (2087577216).

Almost surely, 2^8089361681 is an apocalyptic number.

It is an amenable number.

8089361681 is a deficient number, since it is larger than the sum of its proper divisors (260947183).

8089361681 is a wasteful number, since it uses less digits than its factorization.

8089361681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260947182.

The product of its (nonzero) digits is 497664, while the sum is 50.

The square root of 8089361681 is about 89940.8788093601. The cubic root of 8089361681 is about 2007.4192500812.

The spelling of 8089361681 in words is "eight billion, eighty-nine million, three hundred sixty-one thousand, six hundred eighty-one".