2127812774389 has 16 divisors (see below), whose sum is σ = 2283863655600. Its totient is φ = 1975303655424.

The previous prime is 2127812774363. The next prime is 2127812774413. The reversal of 2127812774389 is 9834772187212.

It can be written as a sum of positive squares in 8 ways, for example, as 17911271889 + 2109901502500 = 133833^2 + 1452550^2 .

It is not a de Polignac number, because 2127812774389 - 2¹⁷ = 2127812643317 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 (2127812774489) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1100442 + ... + 2338075.

It is an arithmetic number, because the mean of its divisors is an integer number (142741478475).

Almost surely, 2^{2127812774389} is an apocalyptic number.

It is an amenable number.

2127812774389 is a deficient number, since it is larger than the sum of its proper divisors (156050881211).

2127812774389 is a wasteful number, since it uses less digits than its factorization.

2127812774389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3439032.

The product of its digits is 18966528, while the sum is 61.

The spelling of 2127812774389 in words is "two trillion, one hundred twenty-seven billion, eight hundred twelve million, seven hundred seventy-four thousand, three hundred eighty-nine".