138026543123 has 48 divisors (see below), whose sum is σ = 176061337344. Its totient is φ = 107406673920.

The previous prime is 138026543113. The next prime is 138026543143. The reversal of 138026543123 is 321345620831.

It is not a de Polignac number, because 138026543123 - 2⁶ = 138026543059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138026543113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8074061 + ... + 8091137.

It is an arithmetic number, because the mean of its divisors is an integer number (3667944528).

Almost surely, 2^138026543123 is an apocalyptic number.

138026543123 is a deficient number, since it is larger than the sum of its proper divisors (38034794221).

138026543123 is a wasteful number, since it uses less digits than its factorization.

138026543123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17452 (or 17445 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 138026543123 in words is "one hundred thirty-eight billion, twenty-six million, five hundred forty-three thousand, one hundred twenty-three".