138664206005 has 128 divisors (see below), whose sum is σ = 196337433600. Its totient is φ = 93245644800.

The previous prime is 138664205989. The next prime is 138664206041. The reversal of 138664206005 is 500602466831.

It is not a de Polignac number, because 138664206005 - 2⁴ = 138664205989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 315863576 + ... + 315864014.

It is an arithmetic number, because the mean of its divisors is an integer number (1533886200).

Almost surely, 2^138664206005 is an apocalyptic number.

It is an amenable number.

138664206005 is a deficient number, since it is larger than the sum of its proper divisors (57673227595).

138664206005 is a wasteful number, since it uses less digits than its factorization.

138664206005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655.

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 138664206005 in words is "one hundred thirty-eight billion, six hundred sixty-four million, two hundred six thousand, five".