138662870469 has 4 divisors (see below), whose sum is σ = 184883827296. Its totient is φ = 92441913644.

The previous prime is 138662870461. The next prime is 138662870477. The reversal of 138662870469 is 964078266831.

138662870469 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 an interprime number because it is at equal distance from previous prime (138662870461) and next prime (138662870477).

It is a cyclic number.

It is not a de Polignac number, because 138662870469 - 2³ = 138662870461 is a prime.

It is a super-2 number, since 2×138662870469² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138662870461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23110478409 + ... + 23110478414.

It is an arithmetic number, because the mean of its divisors is an integer number (46220956824).

Almost surely, 2^138662870469 is an apocalyptic number.

It is an amenable number.

138662870469 is a deficient number, since it is larger than the sum of its proper divisors (46220956827).

138662870469 is an equidigital number, since it uses as much as digits as its factorization.

138662870469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46220956826.

The product of its (nonzero) digits is 20901888, while the sum is 60.

The spelling of 138662870469 in words is "one hundred thirty-eight billion, six hundred sixty-two million, eight hundred seventy thousand, four hundred sixty-nine".