138256507336358 has 8 divisors (see below), whose sum is σ = 209322936341352. Its totient is φ = 68482195222576.

The previous prime is 138256507336333. The next prime is 138256507336403. The reversal of 138256507336358 is 853633705652831.

It is a happy number.

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

It is a super-2 number, since 2×138256507336358² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 138256507336294 and 138256507336303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323029222535 + ... + 323029222962.

It is an arithmetic number, because the mean of its divisors is an integer number (26165367042669).

Almost surely, 2^{138256507336358} is an apocalyptic number.

138256507336358 is a deficient number, since it is larger than the sum of its proper divisors (71066429004994).

138256507336358 is a wasteful number, since it uses less digits than its factorization.

138256507336358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646058445606.

The product of its (nonzero) digits is 326592000, while the sum is 65.

The spelling of 138256507336358 in words is "one hundred thirty-eight trillion, two hundred fifty-six billion, five hundred seven million, three hundred thirty-six thousand, three hundred fifty-eight".