8365648081 has 4 divisors (see below), whose sum is σ = 9560740672. Its totient is φ = 7170555492.

The previous prime is 8365648063. The next prime is 8365648097. The reversal of 8365648081 is 1808465638.

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 a cyclic number.

It is not a de Polignac number, because 8365648081 - 2²⁷ = 8231430353 is a prime.

It is a super-2 number, since 2×8365648081² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8365648001) 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, 597546285 + ... + 597546298.

It is an arithmetic number, because the mean of its divisors is an integer number (2390185168).

Almost surely, 2^8365648081 is an apocalyptic number.

It is an amenable number.

8365648081 is a deficient number, since it is larger than the sum of its proper divisors (1195092591).

8365648081 is a wasteful number, since it uses less digits than its factorization.

8365648081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195092590.

The product of its (nonzero) digits is 1105920, while the sum is 49.

The square root of 8365648081 is about 91463.9168251612. The cubic root of 8365648081 is about 2030.0178827483.

The spelling of 8365648081 in words is "eight billion, three hundred sixty-five million, six hundred forty-eight thousand, eighty-one".