138375283253 has 4 divisors (see below), whose sum is σ = 140986137708. Its totient is φ = 135764428800.

The previous prime is 138375283237. The next prime is 138375283273. The reversal of 138375283253 is 352382573831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 90572708209 + 47802575044 = 300953^2 + 218638^2 .

It is a cyclic number.

It is not a de Polignac number, because 138375283253 - 2⁴ = 138375283237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138375283273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1305427148 + ... + 1305427253.

It is an arithmetic number, because the mean of its divisors is an integer number (35246534427).

Almost surely, 2^138375283253 is an apocalyptic number.

It is an amenable number.

138375283253 is a deficient number, since it is larger than the sum of its proper divisors (2610854455).

138375283253 is an equidigital number, since it uses as much as digits as its factorization.

138375283253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2610854454.

The product of its digits is 3628800, while the sum is 50.

The spelling of 138375283253 in words is "one hundred thirty-eight billion, three hundred seventy-five million, two hundred eighty-three thousand, two hundred fifty-three".