2127755850681 has 4 divisors (see below), whose sum is σ = 2837007800912. Its totient is φ = 1418503900452.

The previous prime is 2127755850653. The next prime is 2127755850707. The reversal of 2127755850681 is 1860585577212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2127755850681 - 2⁶ = 2127755850617 is a prime.

It is a super-2 number, since 2×2127755850681² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2127755850641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 354625975111 + ... + 354625975116.

It is an arithmetic number, because the mean of its divisors is an integer number (709251950228).

Almost surely, 2^{2127755850681} is an apocalyptic number.

It is an amenable number.

2127755850681 is a deficient number, since it is larger than the sum of its proper divisors (709251950231).

2127755850681 is an equidigital number, since it uses as much as digits as its factorization.

2127755850681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709251950230.

The product of its (nonzero) digits is 9408000, while the sum is 57.

The spelling of 2127755850681 in words is "two trillion, one hundred twenty-seven billion, seven hundred fifty-five million, eight hundred fifty thousand, six hundred eighty-one".