8099778773 has 4 divisors (see below), whose sum is σ = 8174088780. Its totient is φ = 8025468768.

The previous prime is 8099778751. The next prime is 8099778803. The reversal of 8099778773 is 3778779908.

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 3289940164 + 4809838609 = 57358^2 + 69353^2 .

It is a cyclic number.

It is not a de Polignac number, because 8099778773 - 2²⁰ = 8098730197 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 (8099778703) 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, 37154840 + ... + 37155057.

It is an arithmetic number, because the mean of its divisors is an integer number (2043522195).

Almost surely, 2^8099778773 is an apocalyptic number.

It is an amenable number.

8099778773 is a deficient number, since it is larger than the sum of its proper divisors (74310007).

8099778773 is a wasteful number, since it uses less digits than its factorization.

8099778773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74310006.

The product of its (nonzero) digits is 37340352, while the sum is 65.

The square root of 8099778773 is about 89998.7709527191. The cubic root of 8099778773 is about 2008.2805665438.

The spelling of 8099778773 in words is "eight billion, ninety-nine million, seven hundred seventy-eight thousand, seven hundred seventy-three".