2127390561 has 40 divisors (see below), whose sum is σ = 3214728000. Its totient is φ = 1401956640.

The previous prime is 2127390521. The next prime is 2127390569. The reversal of 2127390561 is 1650937212.

2127390561 is a `hidden beast` number, since 2 + 1 + 2 + 7 + 3 + 90 + 561 = 666.

It is not a de Polignac number, because 2127390561 - 2¹⁴ = 2127374177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2127390569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4332526 + ... + 4333016.

It is an arithmetic number, because the mean of its divisors is an integer number (80368200).

Almost surely, 2^2127390561 is an apocalyptic number.

It is an amenable number.

2127390561 is a deficient number, since it is larger than the sum of its proper divisors (1087337439).

2127390561 is a wasteful number, since it uses less digits than its factorization.

2127390561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011 (or 1002 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 2127390561 is about 46123.6442727588. The cubic root of 2127390561 is about 1286.1227170499.

The spelling of 2127390561 in words is "two billion, one hundred twenty-seven million, three hundred ninety thousand, five hundred sixty-one".