20327828412138 has 64 divisors (see below), whose sum is σ = 46718718533760. Its totient is φ = 5844349283328.

The previous prime is 20327828412091. The next prime is 20327828412247. The reversal of 20327828412138 is 83121482872302.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93840331 + ... + 94056702.

It is an arithmetic number, because the mean of its divisors is an integer number (729979977090).

Almost surely, 2^{20327828412138} is an apocalyptic number.

20327828412138 is an abundant number, since it is smaller than the sum of its proper divisors (26390890121622).

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

20327828412138 is a wasteful number, since it uses less digits than its factorization.

20327828412138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187897143.

The product of its (nonzero) digits is 2064384, while the sum is 51.

The spelling of 20327828412138 in words is "twenty trillion, three hundred twenty-seven billion, eight hundred twenty-eight million, four hundred twelve thousand, one hundred thirty-eight".