2777118344881 has 2 divisors, whose sum is σ = 2777118344882. Its totient is φ = 2777118344880.

The previous prime is 2777118344839. The next prime is 2777118344893. The reversal of 2777118344881 is 1884438117772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2769511714225 + 7606630656 = 1664185^2 + 87216^2 .

It is a cyclic number.

It is not a de Polignac number, because 2777118344881 - 2⁷ = 2777118344753 is a prime.

It is a super-2 number, since 2×2777118344881² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2777118344981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1388559172440 + 1388559172441.

It is an arithmetic number, because the mean of its divisors is an integer number (1388559172441).

Almost surely, 2^{2777118344881} is an apocalyptic number.

It is an amenable number.

2777118344881 is a deficient number, since it is larger than the sum of its proper divisors (1).

2777118344881 is an equidigital number, since it uses as much as digits as its factorization.

2777118344881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16859136, while the sum is 61.

The spelling of 2777118344881 in words is "two trillion, seven hundred seventy-seven billion, one hundred eighteen million, three hundred forty-four thousand, eight hundred eighty-one".