8112777778 has 8 divisors (see below), whose sum is σ = 13907619072. Its totient is φ = 3476904756.

The previous prime is 8112777773. The next prime is 8112777781. The reversal of 8112777778 is 8777772118.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (8112777773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289742050 + ... + 289742077.

It is an arithmetic number, because the mean of its divisors is an integer number (1738452384).

Almost surely, 2^8112777778 is an apocalyptic number.

8112777778 is a deficient number, since it is larger than the sum of its proper divisors (5794841294).

8112777778 is a wasteful number, since it uses less digits than its factorization.

8112777778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579484136.

The product of its digits is 2151296, while the sum is 55.

The square root of 8112777778 is about 90070.9596817976. The cubic root of 8112777778 is about 2009.3543282270.

The spelling of 8112777778 in words is "eight billion, one hundred twelve million, seven hundred seventy-seven thousand, seven hundred seventy-eight".