2787727944421 has 12 divisors (see below), whose sum is σ = 3283916157120. Its totient is φ = 2359234495800.

The previous prime is 2787727944347. The next prime is 2787727944451. The reversal of 2787727944421 is 1244497277872.

It is not a de Polignac number, because 2787727944421 - 2¹³ = 2787727936229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2787727944451) 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 11 ways as a sum of consecutive naturals, for example, 360074655 + ... + 360082396.

It is an arithmetic number, because the mean of its divisors is an integer number (273659679760).

Almost surely, 2^{2787727944421} is an apocalyptic number.

It is an amenable number.

2787727944421 is a deficient number, since it is larger than the sum of its proper divisors (496188212699).

2787727944421 is an equidigital number, since it uses as much as digits as its factorization.

2787727944421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720157144 (or 720157137 counting only the distinct ones).

The product of its digits is 88510464, while the sum is 64.

The spelling of 2787727944421 in words is "two trillion, seven hundred eighty-seven billion, seven hundred twenty-seven million, nine hundred forty-four thousand, four hundred twenty-one".