138794543099 has 4 divisors (see below), whose sum is σ = 139854043560. Its totient is φ = 137735042640.

The previous prime is 138794543089. The next prime is 138794543101. The reversal of 138794543099 is 990345497831.

138794543099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 990345497831 = 58031 ⋅17065801.

It is a cyclic number.

It is not a de Polignac number, because 138794543099 - 2²⁴ = 138777765883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138794543089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 529750034 + ... + 529750295.

It is an arithmetic number, because the mean of its divisors is an integer number (34963510890).

Almost surely, 2^138794543099 is an apocalyptic number.

138794543099 is a deficient number, since it is larger than the sum of its proper divisors (1059500461).

138794543099 is a wasteful number, since it uses less digits than its factorization.

138794543099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059500460.

The product of its (nonzero) digits is 29393280, while the sum is 62.

The spelling of 138794543099 in words is "one hundred thirty-eight billion, seven hundred ninety-four million, five hundred forty-three thousand, ninety-nine".