2771612689 has 2 divisors, whose sum is σ = 2771612690. Its totient is φ = 2771612688.

The previous prime is 2771612639. The next prime is 2771612693. The reversal of 2771612689 is 9862161772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1901657664 + 869955025 = 43608^2 + 29495^2 .

It is a cyclic number.

It is not a de Polignac number, because 2771612689 - 2¹³ = 2771604497 is a prime.

It is not a weakly prime, because it can be changed into another prime (2771612639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1385806344 + 1385806345.

It is an arithmetic number, because the mean of its divisors is an integer number (1385806345).

Almost surely, 2^2771612689 is an apocalyptic number.

It is an amenable number.

2771612689 is a deficient number, since it is larger than the sum of its proper divisors (1).

2771612689 is an equidigital number, since it uses as much as digits as its factorization.

2771612689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 49.

The square root of 2771612689 is about 52646.1080137934. The cubic root of 2771612689 is about 1404.6803710553.

The spelling of 2771612689 in words is "two billion, seven hundred seventy-one million, six hundred twelve thousand, six hundred eighty-nine".