138628752415 has 8 divisors (see below), whose sum is σ = 176140062000. Its totient is φ = 104379295872.

The previous prime is 138628752401. The next prime is 138628752421. The reversal of 138628752415 is 514257826831.

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 138628752415 - 2⁹ = 138628751903 is a prime.

It is a super-2 number, since 2×138628752415² (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 7 ways as a sum of consecutive naturals, for example, 815463165 + ... + 815463334.

It is an arithmetic number, because the mean of its divisors is an integer number (22017507750).

Almost surely, 2^138628752415 is an apocalyptic number.

138628752415 is a deficient number, since it is larger than the sum of its proper divisors (37511309585).

138628752415 is a wasteful number, since it uses less digits than its factorization.

138628752415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1630926521.

The product of its digits is 3225600, while the sum is 52.

The spelling of 138628752415 in words is "one hundred thirty-eight billion, six hundred twenty-eight million, seven hundred fifty-two thousand, four hundred fifteen".