138028852013 has 8 divisors (see below), whose sum is σ = 148871346456. Its totient is φ = 127218484800.

The previous prime is 138028851979. The next prime is 138028852111. The reversal of 138028852013 is 310258820831.

It can be written as a sum of positive squares in 4 ways, for example, as 18088009 + 138010764004 = 4253^2 + 371498^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 138028852013 - 2⁶ = 138028851949 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 (138028852613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8022878 + ... + 8040063.

It is an arithmetic number, because the mean of its divisors is an integer number (18608918307).

Almost surely, 2^138028852013 is an apocalyptic number.

138028852013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

138028852013 is a deficient number, since it is larger than the sum of its proper divisors (10842494443).

138028852013 is a wasteful number, since it uses less digits than its factorization.

138028852013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16063615.

The product of its (nonzero) digits is 92160, while the sum is 41.

The spelling of 138028852013 in words is "one hundred thirty-eight billion, twenty-eight million, eight hundred fifty-two thousand, thirteen".