138364781258 has 16 divisors (see below), whose sum is σ = 226427425920. Its totient is φ = 62889657600.

The previous prime is 138364781239. The next prime is 138364781281. The reversal of 138364781258 is 852187463831.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266858 + ... + 589866.

It is an arithmetic number, because the mean of its divisors is an integer number (14151714120).

Almost surely, 2^138364781258 is an apocalyptic number.

138364781258 is a deficient number, since it is larger than the sum of its proper divisors (88062644662).

138364781258 is a wasteful number, since it uses less digits than its factorization.

138364781258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342493.

The product of its digits is 7741440, while the sum is 56.

The spelling of 138364781258 in words is "one hundred thirty-eight billion, three hundred sixty-four million, seven hundred eighty-one thousand, two hundred fifty-eight".