138284859377 has 16 divisors (see below), whose sum is σ = 159040742784. Its totient is φ = 117781344000.

The previous prime is 138284859353. The next prime is 138284859463. The reversal of 138284859377 is 773958482831.

It is a cyclic number.

It is not a de Polignac number, because 138284859377 - 2³² = 133989892081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138284859077) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 688802 + ... + 866612.

It is an arithmetic number, because the mean of its divisors is an integer number (9940046424).

Almost surely, 2^138284859377 is an apocalyptic number.

It is an amenable number.

138284859377 is a deficient number, since it is larger than the sum of its proper divisors (20755883407).

138284859377 is a wasteful number, since it uses less digits than its factorization.

138284859377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178520.

The product of its digits is 81285120, while the sum is 65.

The spelling of 138284859377 in words is "one hundred thirty-eight billion, two hundred eighty-four million, eight hundred fifty-nine thousand, three hundred seventy-seven".