138461882536605 has 32 divisors (see below), whose sum is σ = 221782290557184. Its totient is φ = 73765249399296.

The previous prime is 138461882536589. The next prime is 138461882536631. The reversal of 138461882536605 is 506635288164831.

It is not a de Polignac number, because 138461882536605 - 2⁴ = 138461882536589 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 518172664 + ... + 518439806.

It is an arithmetic number, because the mean of its divisors is an integer number (6930696579912).

Almost surely, 2^{138461882536605} is an apocalyptic number.

138461882536605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138461882536605 is a deficient number, since it is larger than the sum of its proper divisors (83320408020579).

138461882536605 is a wasteful number, since it uses less digits than its factorization.

138461882536605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304965.

The product of its (nonzero) digits is 199065600, while the sum is 66.

The spelling of 138461882536605 in words is "one hundred thirty-eight trillion, four hundred sixty-one billion, eight hundred eighty-two million, five hundred thirty-six thousand, six hundred five".