138199013428 has 12 divisors (see below), whose sum is σ = 276398026912. Its totient is φ = 59228148600.

The previous prime is 138199013419. The next prime is 138199013437. The reversal of 138199013428 is 824310991831.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (138199013419) and next prime (138199013437).

138199013428 is an admirable number.

It is a super-2 number, since 2×138199013428² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2467839498 + ... + 2467839553.

Almost surely, 2^138199013428 is an apocalyptic number.

It is an amenable number.

138199013428 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138199013428 is a wasteful number, since it uses less digits than its factorization.

138199013428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4935679062 (or 4935679060 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 49.

The spelling of 138199013428 in words is "one hundred thirty-eight billion, one hundred ninety-nine million, thirteen thousand, four hundred twenty-eight".