2777775279551 has 2 divisors, whose sum is σ = 2777775279552. Its totient is φ = 2777775279550.

The previous prime is 2777775279547. The next prime is 2777775279553. The reversal of 2777775279551 is 1559725777772.

2777775279551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2777775279551 - 2² = 2777775279547 is a prime.

It is a super-3 number, since 3×2777775279551³ (a number of 38 digits) contains 333 as substring.

It is a Sophie Germain prime.

Together with 2777775279553, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2777775279553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1388887639775 + 1388887639776.

It is an arithmetic number, because the mean of its divisors is an integer number (1388887639776).

Almost surely, 2^{2777775279551} is an apocalyptic number.

2777775279551 is a deficient number, since it is larger than the sum of its proper divisors (1).

2777775279551 is an equidigital number, since it uses as much as digits as its factorization.

2777775279551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 529420500, while the sum is 71.

The spelling of 2777775279551 in words is "two trillion, seven hundred seventy-seven billion, seven hundred seventy-five million, two hundred seventy-nine thousand, five hundred fifty-one".