2772727333921 has 4 divisors (see below), whose sum is σ = 2773064124292. Its totient is φ = 2772390543552.

The previous prime is 2772727333897. The next prime is 2772727333949. The reversal of 2772727333921 is 1293337272772.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 528004236321 + 2244723097600 = 726639^2 + 1498240^2 .

It is a cyclic number.

It is not a de Polignac number, because 2772727333921 - 2³¹ = 2770579850273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2772724333921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168382836 + ... + 168399301.

It is an arithmetic number, because the mean of its divisors is an integer number (693266031073).

Almost surely, 2^{2772727333921} is an apocalyptic number.

It is an amenable number.

2772727333921 is a deficient number, since it is larger than the sum of its proper divisors (336790371).

2772727333921 is an equidigital number, since it uses as much as digits as its factorization.

2772727333921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336790370.

The product of its digits is 9335088, while the sum is 55.

The spelling of 2772727333921 in words is "two trillion, seven hundred seventy-two billion, seven hundred twenty-seven million, three hundred thirty-three thousand, nine hundred twenty-one".