2138936576487 has 8 divisors (see below), whose sum is σ = 2879603935104. Its totient is φ = 1412113467768.

The previous prime is 2138936576479. The next prime is 2138936576519. The reversal of 2138936576487 is 7846756398312.

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

It is not a de Polignac number, because 2138936576487 - 2³ = 2138936576479 is a prime.

It is a super-2 number, since 2×2138936576487² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138936576587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3461062113 + ... + 3461062730.

It is an arithmetic number, because the mean of its divisors is an integer number (359950491888).

Almost surely, 2^{2138936576487} is an apocalyptic number.

2138936576487 is a deficient number, since it is larger than the sum of its proper divisors (740667358617).

2138936576487 is a wasteful number, since it uses less digits than its factorization.

2138936576487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6922124949.

The product of its digits is 365783040, while the sum is 69.

The spelling of 2138936576487 in words is "two trillion, one hundred thirty-eight billion, nine hundred thirty-six million, five hundred seventy-six thousand, four hundred eighty-seven".