2138622936255 has 48 divisors (see below), whose sum is σ = 4077034416000. Its totient is φ = 1030459221504.

The previous prime is 2138622936221. The next prime is 2138622936257. The reversal of 2138622936255 is 5526392268312.

It is a happy number.

2138622936255 is a `hidden beast` number, since 2 + 1 + 3 + 8 + 6 + 2 + 2 + 9 + 3 + 625 + 5 = 666.

It is not a de Polignac number, because 2138622936255 - 2¹⁷ = 2138622805183 is a prime.

It is a super-3 number, since 3×2138622936255³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138622936257) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38863630 + ... + 38918619.

It is an arithmetic number, because the mean of its divisors is an integer number (84938217000).

Almost surely, 2^{2138622936255} is an apocalyptic number.

2138622936255 is a deficient number, since it is larger than the sum of its proper divisors (1938411479745).

2138622936255 is a wasteful number, since it uses less digits than its factorization.

2138622936255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77782320 (or 77782317 counting only the distinct ones).

The product of its digits is 9331200, while the sum is 54.

The spelling of 2138622936255 in words is "two trillion, one hundred thirty-eight billion, six hundred twenty-two million, nine hundred thirty-six thousand, two hundred fifty-five".