138856848507105 has 16 divisors (see below), whose sum is σ = 225813104458944. Its totient is φ = 72842936921280.

The previous prime is 138856848507067. The next prime is 138856848507131. The reversal of 138856848507105 is 501705848658831.

It is not a de Polignac number, because 138856848507105 - 2²⁵ = 138856814952673 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 138856848507105.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75878058379 + ... + 75878060208.

It is an arithmetic number, because the mean of its divisors is an integer number (14113319028684).

Almost surely, 2^{138856848507105} is an apocalyptic number.

138856848507105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138856848507105 is a deficient number, since it is larger than the sum of its proper divisors (86956255951839).

138856848507105 is a wasteful number, since it uses less digits than its factorization.

138856848507105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151756118656.

The product of its (nonzero) digits is 258048000, while the sum is 69.

The spelling of 138856848507105 in words is "one hundred thirty-eight trillion, eight hundred fifty-six billion, eight hundred forty-eight million, five hundred seven thousand, one hundred five".