2127788485 has 4 divisors (see below), whose sum is σ = 2553346188. Its totient is φ = 1702230784.

The previous prime is 2127788483. The next prime is 2127788491. The reversal of 2127788485 is 5848877212.

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 680062084 + 1447726401 = 26078^2 + 38049^2 .

It is a cyclic number.

It is not a de Polignac number, because 2127788485 - 2¹ = 2127788483 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 (2127788483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212778844 + ... + 212778853.

It is an arithmetic number, because the mean of its divisors is an integer number (638336547).

Almost surely, 2^2127788485 is an apocalyptic number.

It is an amenable number.

2127788485 is a deficient number, since it is larger than the sum of its proper divisors (425557703).

2127788485 is an equidigital number, since it uses as much as digits as its factorization.

2127788485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425557702.

The product of its digits is 2007040, while the sum is 52.

The square root of 2127788485 is about 46127.9577371468. The cubic root of 2127788485 is about 1286.2029009145.

The spelling of 2127788485 in words is "two billion, one hundred twenty-seven million, seven hundred eighty-eight thousand, four hundred eighty-five".