2127640647 has 24 divisors (see below), whose sum is σ = 3123978480. Its totient is φ = 1287088000.

The previous prime is 2127640631. The next prime is 2127640657. The reversal of 2127640647 is 7460467212.

It is not a de Polignac number, because 2127640647 - 2⁴ = 2127640631 is a prime.

It is a super-3 number, since 3×2127640647³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2127640657) 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 23 ways as a sum of consecutive naturals, for example, 201397 + ... + 211697.

It is an arithmetic number, because the mean of its divisors is an integer number (130165770).

Almost surely, 2^2127640647 is an apocalyptic number.

2127640647 is a deficient number, since it is larger than the sum of its proper divisors (996337833).

2127640647 is a wasteful number, since it uses less digits than its factorization.

2127640647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10895 (or 10884 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 39.

The square root of 2127640647 is about 46126.3552321230. The cubic root of 2127640647 is about 1286.1731119153.

The spelling of 2127640647 in words is "two billion, one hundred twenty-seven million, six hundred forty thousand, six hundred forty-seven".