138195138875 has 8 divisors (see below), whose sum is σ = 172467533472. Its totient is φ = 110556111000.

The previous prime is 138195138869. The next prime is 138195138881. The reversal of 138195138875 is 578831591831.

It is an interprime number because it is at equal distance from previous prime (138195138869) and next prime (138195138881).

It is not a de Polignac number, because 138195138875 - 2⁶ = 138195138811 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 552780431 + ... + 552780680.

It is an arithmetic number, because the mean of its divisors is an integer number (21558441684).

Almost surely, 2^138195138875 is an apocalyptic number.

138195138875 is a deficient number, since it is larger than the sum of its proper divisors (34272394597).

138195138875 is an equidigital number, since it uses as much as digits as its factorization.

138195138875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105561126 (or 1105561116 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 59.

The spelling of 138195138875 in words is "one hundred thirty-eight billion, one hundred ninety-five million, one hundred thirty-eight thousand, eight hundred seventy-five".