8116395997 has 4 divisors (see below), whose sum is σ = 8116649020. Its totient is φ = 8116142976.

The previous prime is 8116395977. The next prime is 8116396033. The reversal of 8116395997 is 7995936118.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3842636121 + 4273759876 = 61989^2 + 65374^2 .

It is a cyclic number.

It is not a de Polignac number, because 8116395997 - 2¹¹ = 8116393949 is a prime.

It is a super-3 number, since 3×8116395997³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8116395907) 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, 69972 + ... + 145357.

It is an arithmetic number, because the mean of its divisors is an integer number (2029162255).

Almost surely, 2^8116395997 is an apocalyptic number.

It is an amenable number.

8116395997 is a deficient number, since it is larger than the sum of its proper divisors (253023).

8116395997 is a wasteful number, since it uses less digits than its factorization.

8116395997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253022.

The product of its digits is 3674160, while the sum is 58.

The square root of 8116395997 is about 90091.0428233573. The cubic root of 8116395997 is about 2009.6530012443.

The spelling of 8116395997 in words is "eight billion, one hundred sixteen million, three hundred ninety-five thousand, nine hundred ninety-seven".