138632408793 has 16 divisors (see below), whose sum is σ = 209751164160. Its totient is φ = 90455187888.

The previous prime is 138632408791. The next prime is 138632408813. The reversal of 138632408793 is 397804236831.

138632408793 is a `hidden beast` number, since 138 + 6 + 32 + 408 + 79 + 3 = 666.

It is not a de Polignac number, because 138632408793 - 2¹ = 138632408791 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (138632408791) 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, 54621430 + ... + 54623967.

It is an arithmetic number, because the mean of its divisors is an integer number (13109447760).

Almost surely, 2^138632408793 is an apocalyptic number.

It is an amenable number.

138632408793 is a deficient number, since it is larger than the sum of its proper divisors (71118755367).

138632408793 is a wasteful number, since it uses less digits than its factorization.

138632408793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109245453 (or 109245447 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 54.

The spelling of 138632408793 in words is "one hundred thirty-eight billion, six hundred thirty-two million, four hundred eight thousand, seven hundred ninety-three".