6642336430 has 32 divisors (see below), whose sum is σ = 12150749088. Its totient is φ = 2613888000.

The previous prime is 6642336397. The next prime is 6642336431. The reversal of 6642336430 is 346332466.

It is a self number, because there is not a number n which added to its sum of digits gives 6642336430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6642336431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 281385 + ... + 304075.

It is an arithmetic number, because the mean of its divisors is an integer number (379710909).

Almost surely, 2^6642336430 is an apocalyptic number.

6642336430 is a deficient number, since it is larger than the sum of its proper divisors (5508412658).

6642336430 is a wasteful number, since it uses less digits than its factorization.

6642336430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23172.

The product of its (nonzero) digits is 186624, while the sum is 37.

The square root of 6642336430 is about 81500.5302436739. The cubic root of 6642336430 is about 1879.7797038912.

Adding to 6642336430 its reverse (346332466), we get a palindrome (6988668896).

The spelling of 6642336430 in words is "six billion, six hundred forty-two million, three hundred thirty-six thousand, four hundred thirty".