2772840881 has 2 divisors, whose sum is σ = 2772840882. Its totient is φ = 2772840880.

The previous prime is 2772840839. The next prime is 2772840883. The reversal of 2772840881 is 1880482772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2169696400 + 603144481 = 46580^2 + 24559^2 .

It is a cyclic number.

It is not a de Polignac number, because 2772840881 - 2⁶ = 2772840817 is a prime.

It is a super-2 number, since 2×2772840881² = 15377293102689712322, which contains 22 as substring.

Together with 2772840883, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2772840883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1386420440 + 1386420441.

It is an arithmetic number, because the mean of its divisors is an integer number (1386420441).

Almost surely, 2^2772840881 is an apocalyptic number.

It is an amenable number.

2772840881 is a deficient number, since it is larger than the sum of its proper divisors (1).

2772840881 is an equidigital number, since it uses as much as digits as its factorization.

2772840881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 401408, while the sum is 47.

The square root of 2772840881 is about 52657.7713257977. The cubic root of 2772840881 is about 1404.8878269804.

The spelling of 2772840881 in words is "two billion, seven hundred seventy-two million, eight hundred forty thousand, eight hundred eighty-one".