5326321642638 has 32 divisors (see below), whose sum is σ = 10700005336704. Its totient is φ = 1767547507872.

The previous prime is 5326321642637. The next prime is 5326321642699. The reversal of 5326321642638 is 8362461236235.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5326321642637) 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 15 ways as a sum of consecutive naturals, for example, 41500081 + ... + 41628227.

It is an arithmetic number, because the mean of its divisors is an integer number (334375166772).

Almost surely, 2^{5326321642638} is an apocalyptic number.

5326321642638 is an abundant number, since it is smaller than the sum of its proper divisors (5373683694066).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5326321642638 is a wasteful number, since it uses less digits than its factorization.

5326321642638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158896.

The product of its digits is 7464960, while the sum is 51.

The spelling of 5326321642638 in words is "five trillion, three hundred twenty-six billion, three hundred twenty-one million, six hundred forty-two thousand, six hundred thirty-eight".