2668640432 has 20 divisors (see below), whose sum is σ = 5171648160. Its totient is φ = 1334021568.

The previous prime is 2668640423. The next prime is 2668640441. The reversal of 2668640432 is 2340468662.

It is an interprime number because it is at equal distance from previous prime (2668640423) and next prime (2668640441).

It is a self number, because there is not a number n which added to its sum of digits gives 2668640432.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66953 + ... + 99095.

It is an arithmetic number, because the mean of its divisors is an integer number (258582408).

Almost surely, 2^2668640432 is an apocalyptic number.

It is an amenable number.

2668640432 is a deficient number, since it is larger than the sum of its proper divisors (2503007728).

2668640432 is a wasteful number, since it uses less digits than its factorization.

2668640432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37340 (or 37334 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 41.

The square root of 2668640432 is about 51658.8853151130. The cubic root of 2668640432 is about 1387.0645974364.

The spelling of 2668640432 in words is "two billion, six hundred sixty-eight million, six hundred forty thousand, four hundred thirty-two".