2138936576488 has 128 divisors (see below), whose sum is σ = 4421304518400. Its totient is φ = 966765735936.

The previous prime is 2138936576479. The next prime is 2138936576519. The reversal of 2138936576488 is 8846756398312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122447131 + ... + 122464597.

It is an arithmetic number, because the mean of its divisors is an integer number (34541441550).

Almost surely, 2^{2138936576488} is an apocalyptic number.

It is an amenable number.

2138936576488 is an abundant number, since it is smaller than the sum of its proper divisors (2282367941912).

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

2138936576488 is a wasteful number, since it uses less digits than its factorization.

2138936576488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18011 (or 18007 counting only the distinct ones).

The product of its digits is 418037760, while the sum is 70.

The spelling of 2138936576488 in words is "two trillion, one hundred thirty-eight billion, nine hundred thirty-six million, five hundred seventy-six thousand, four hundred eighty-eight".