12638750138755 has 16 divisors (see below), whose sum is σ = 17293927793184. Its totient is φ = 8784217290240.

The previous prime is 12638750138743. The next prime is 12638750138767. The reversal of 12638750138755 is 55783105783621.

12638750138755 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12638750138743) and next prime (12638750138767).

It is not a de Polignac number, because 12638750138755 - 2¹⁷ = 12638750007683 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12638750138693 and 12638750138702.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5718890361 + ... + 5718892570.

It is an arithmetic number, because the mean of its divisors is an integer number (1080870487074).

Almost surely, 2^{12638750138755} is an apocalyptic number.

12638750138755 is a deficient number, since it is larger than the sum of its proper divisors (4655177654429).

12638750138755 is a wasteful number, since it uses less digits than its factorization.

12638750138755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11437782966.

The product of its (nonzero) digits is 42336000, while the sum is 61.

The spelling of 12638750138755 in words is "twelve trillion, six hundred thirty-eight billion, seven hundred fifty million, one hundred thirty-eight thousand, seven hundred fifty-five".