138526893036 has 240 divisors, whose sum is σ = 425220128256. Its totient is φ = 38501277696.

The previous prime is 138526893023. The next prime is 138526893047. The reversal of 138526893036 is 630398625831.

It is a happy number.

138526893036 is a `hidden beast` number, since 1 + 3 + 8 + 526 + 89 + 3 + 0 + 36 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 25060905 + ... + 25066431.

Almost surely, 2^138526893036 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 138526893036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212610064128).

138526893036 is an abundant number, since it is smaller than the sum of its proper divisors (286693235220).

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

138526893036 is a wasteful number, since it uses less digits than its factorization.

138526893036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5850 (or 5839 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 54.

The spelling of 138526893036 in words is "one hundred thirty-eight billion, five hundred twenty-six million, eight hundred ninety-three thousand, thirty-six".