2778317061 has 16 divisors (see below), whose sum is σ = 4118069760. Its totient is φ = 1654580160.

The previous prime is 2778317051. The next prime is 2778317093. The reversal of 2778317061 is 1607138772.

It is a happy number.

It is not a de Polignac number, because 2778317061 - 2⁶ = 2778316997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2778317051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1147806 + ... + 1150223.

It is an arithmetic number, because the mean of its divisors is an integer number (257379360).

Almost surely, 2^2778317061 is an apocalyptic number.

It is an amenable number.

2778317061 is a deficient number, since it is larger than the sum of its proper divisors (1339752699).

2778317061 is a wasteful number, since it uses less digits than its factorization.

2778317061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2298076.

The product of its (nonzero) digits is 98784, while the sum is 42.

The square root of 2778317061 is about 52709.7435110436. The cubic root of 2778317061 is about 1405.8120727670.

It can be divided in two parts, 27783 and 17061, that added together give a palindrome (44844).

The spelling of 2778317061 in words is "two billion, seven hundred seventy-eight million, three hundred seventeen thousand, sixty-one".