8105776772 has 18 divisors (see below), whose sum is σ = 14239736238. Its totient is φ = 4037340352.

The previous prime is 8105776769. The next prime is 8105776831. The reversal of 8105776772 is 2776775018.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 7441477696 + 664299076 = 86264^2 + 25774^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 8105776772.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 262028 + ... + 291324.

Almost surely, 2^8105776772 is an apocalyptic number.

It is an amenable number.

8105776772 is a deficient number, since it is larger than the sum of its proper divisors (6133959466).

8105776772 is a wasteful number, since it uses less digits than its factorization.

8105776772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29827 (or 29562 counting only the distinct ones).

The product of its (nonzero) digits is 1152480, while the sum is 50.

The square root of 8105776772 is about 90032.0874577503. The cubic root of 8105776772 is about 2008.7761641424.

The spelling of 8105776772 in words is "eight billion, one hundred five million, seven hundred seventy-six thousand, seven hundred seventy-two".