2769729121 has 2 divisors, whose sum is σ = 2769729122. Its totient is φ = 2769729120.

The previous prime is 2769729107. The next prime is 2769729143. The reversal of 2769729121 is 1219279672.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2402470225 + 367258896 = 49015^2 + 19164^2 .

It is a cyclic number.

It is not a de Polignac number, because 2769729121 - 2⁷ = 2769728993 is a prime.

It is not a weakly prime, because it can be changed into another prime (2769729181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1384864560 + 1384864561.

It is an arithmetic number, because the mean of its divisors is an integer number (1384864561).

Almost surely, 2^2769729121 is an apocalyptic number.

It is an amenable number.

2769729121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2769729121 is an equidigital number, since it uses as much as digits as its factorization.

2769729121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 46.

The square root of 2769729121 is about 52628.2160157458. The cubic root of 2769729121 is about 1404.3620953943.

The spelling of 2769729121 in words is "two billion, seven hundred sixty-nine million, seven hundred twenty-nine thousand, one hundred twenty-one".