2742776881 has 12 divisors (see below), whose sum is σ = 2979416412. Its totient is φ = 2523758016.

The previous prime is 2742776879. The next prime is 2742776893. The reversal of 2742776881 is 1886772472.

It can be written as a sum of positive squares in 6 ways, for example, as 271096225 + 2471680656 = 16465^2 + 49716^2 .

It is not a de Polignac number, because 2742776881 - 2¹ = 2742776879 is a prime.

It is a super-2 number, since 2×2742776881² = 15045650037896176322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2742776851) 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 11 ways as a sum of consecutive naturals, for example, 27975 + ... + 79171.

It is an arithmetic number, because the mean of its divisors is an integer number (248284701).

Almost surely, 2^2742776881 is an apocalyptic number.

It is an amenable number.

2742776881 is a deficient number, since it is larger than the sum of its proper divisors (236639531).

2742776881 is a wasteful number, since it uses less digits than its factorization.

2742776881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51540 (or 51527 counting only the distinct ones).

The product of its digits is 2107392, while the sum is 52.

The square root of 2742776881 is about 52371.5273884579. The cubic root of 2742776881 is about 1399.7919556501.

The spelling of 2742776881 in words is "two billion, seven hundred forty-two million, seven hundred seventy-six thousand, eight hundred eighty-one".