2771744321 has 2 divisors, whose sum is σ = 2771744322. Its totient is φ = 2771744320.

The previous prime is 2771744219. The next prime is 2771744347. The reversal of 2771744321 is 1234471772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2700257296 + 71487025 = 51964^2 + 8455^2 .

It is a cyclic number.

It is not a de Polignac number, because 2771744321 - 2³⁰ = 1698002497 is a prime.

It is not a weakly prime, because it can be changed into another prime (2771744621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1385872160 + 1385872161.

It is an arithmetic number, because the mean of its divisors is an integer number (1385872161).

Almost surely, 2^2771744321 is an apocalyptic number.

It is an amenable number.

2771744321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2771744321 is an equidigital number, since it uses as much as digits as its factorization.

2771744321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 65856, while the sum is 38.

The square root of 2771744321 is about 52647.3581578411. The cubic root of 2771744321 is about 1404.7026081641.

The spelling of 2771744321 in words is "two billion, seven hundred seventy-one million, seven hundred forty-four thousand, three hundred twenty-one".