138108862533 has 4 divisors (see below), whose sum is σ = 184145150048. Its totient is φ = 92072575020.

The previous prime is 138108862523. The next prime is 138108862547. The reversal of 138108862533 is 335268801831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 138108862533 - 2²⁰ = 138107813957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138108862523) 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, 23018143753 + ... + 23018143758.

It is an arithmetic number, because the mean of its divisors is an integer number (46036287512).

Almost surely, 2^138108862533 is an apocalyptic number.

It is an amenable number.

138108862533 is a deficient number, since it is larger than the sum of its proper divisors (46036287515).

138108862533 is an equidigital number, since it uses as much as digits as its factorization.

138108862533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46036287514.

The product of its (nonzero) digits is 829440, while the sum is 48.

The spelling of 138108862533 in words is "one hundred thirty-eight billion, one hundred eight million, eight hundred sixty-two thousand, five hundred thirty-three".