2776889655 has 16 divisors (see below), whose sum is σ = 4936692960. Its totient is φ = 1481007744.

The previous prime is 2776889651. The next prime is 2776889663. The reversal of 2776889655 is 5569886772.

It is not a de Polignac number, because 2776889655 - 2² = 2776889651 is a prime.

It is a super-2 number, since 2×2776889655² = 15422232312092038050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2776889592 and 2776889601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2776889651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10284642 + ... + 10284911.

It is an arithmetic number, because the mean of its divisors is an integer number (308543310).

Almost surely, 2^2776889655 is an apocalyptic number.

2776889655 is a deficient number, since it is larger than the sum of its proper divisors (2159803305).

2776889655 is a wasteful number, since it uses less digits than its factorization.

2776889655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20569567 (or 20569561 counting only the distinct ones).

The product of its digits is 50803200, while the sum is 63.

The square root of 2776889655 is about 52696.2015234495. The cubic root of 2776889655 is about 1405.5712785147.

The spelling of 2776889655 in words is "two billion, seven hundred seventy-six million, eight hundred eighty-nine thousand, six hundred fifty-five".