138888767537463 has 8 divisors (see below), whose sum is σ = 185718697803648. Its totient is φ = 92325674481464.

The previous prime is 138888767537461. The next prime is 138888767537467. The reversal of 138888767537463 is 364735767888831.

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

It is a cyclic number.

It is not a de Polignac number, because 138888767537463 - 2¹ = 138888767537461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138888767537461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66709301331 + ... + 66709303412.

It is an arithmetic number, because the mean of its divisors is an integer number (23214837225456).

Almost surely, 2^{138888767537463} is an apocalyptic number.

138888767537463 is a deficient number, since it is larger than the sum of its proper divisors (46829930266185).

138888767537463 is a wasteful number, since it uses less digits than its factorization.

138888767537463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133418605093.

The product of its digits is 27311800320, while the sum is 84.

The spelling of 138888767537463 in words is "one hundred thirty-eight trillion, eight hundred eighty-eight billion, seven hundred sixty-seven million, five hundred thirty-seven thousand, four hundred sixty-three".