138528739935523 has 8 divisors (see below), whose sum is σ = 158759558703360. Its totient is φ = 118408170861960.

The previous prime is 138528739935503. The next prime is 138528739935571. The reversal of 138528739935523 is 325539937825831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 138528739935523 - 2⁵ = 138528739935491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138528739935503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27562420873 + ... + 27562425898.

It is an arithmetic number, because the mean of its divisors is an integer number (19844944837920).

Almost surely, 2^{138528739935523} is an apocalyptic number.

138528739935523 is a deficient number, since it is larger than the sum of its proper divisors (20230818767837).

138528739935523 is an equidigital number, since it uses as much as digits as its factorization.

138528739935523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55124847137.

The product of its digits is 1469664000, while the sum is 73.

The spelling of 138528739935523 in words is "one hundred thirty-eight trillion, five hundred twenty-eight billion, seven hundred thirty-nine million, nine hundred thirty-five thousand, five hundred twenty-three".