138266302284 has 72 divisors (see below), whose sum is σ = 381671126928. Its totient is φ = 41855877120.

The previous prime is 138266302271. The next prime is 138266302289. The reversal of 138266302284 is 482203662831.

138266302284 is a `hidden beast` number, since 1 + 3 + 8 + 2 + 6 + 630 + 2 + 2 + 8 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (138266302289) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 208204 + ... + 565580.

It is an arithmetic number, because the mean of its divisors is an integer number (5300987874).

Almost surely, 2^138266302284 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138266302284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190835563464).

138266302284 is an abundant number, since it is smaller than the sum of its proper divisors (243404824644).

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

138266302284 is a wasteful number, since it uses less digits than its factorization.

138266302284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358375 (or 358370 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The spelling of 138266302284 in words is "one hundred thirty-eight billion, two hundred sixty-six million, three hundred two thousand, two hundred eighty-four".