2773142778 has 32 divisors (see below), whose sum is σ = 6348718080. Its totient is φ = 791063280.

The previous prime is 2773142773. The next prime is 2773142783. The reversal of 2773142778 is 8772413772.

It is an interprime number because it is at equal distance from previous prime (2773142773) and next prime (2773142783).

It is not an unprimeable number, because it can be changed into a prime (2773142773) 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 15 ways as a sum of consecutive naturals, for example, 25818 + ... + 78821.

It is an arithmetic number, because the mean of its divisors is an integer number (198397440).

Almost surely, 2^2773142778 is an apocalyptic number.

2773142778 is an abundant number, since it is smaller than the sum of its proper divisors (3575575302).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2773142778 is a wasteful number, since it uses less digits than its factorization.

2773142778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105282.

The product of its digits is 921984, while the sum is 48.

The square root of 2773142778 is about 52660.6378426999. The cubic root of 2773142778 is about 1404.9388115178.

The spelling of 2773142778 in words is "two billion, seven hundred seventy-three million, one hundred forty-two thousand, seven hundred seventy-eight".