138656430798 has 8 divisors (see below), whose sum is σ = 277312861608. Its totient is φ = 46218810264.

The previous prime is 138656430797. The next prime is 138656430817. The reversal of 138656430798 is 897034656831.

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

138656430798 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138656430797) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11554702561 + ... + 11554702572.

It is an arithmetic number, because the mean of its divisors is an integer number (34664107701).

Almost surely, 2^138656430798 is an apocalyptic number.

138656430798 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138656430798 is a wasteful number, since it uses less digits than its factorization.

138656430798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23109405138.

The product of its (nonzero) digits is 26127360, while the sum is 60.

The spelling of 138656430798 in words is "one hundred thirty-eight billion, six hundred fifty-six million, four hundred thirty thousand, seven hundred ninety-eight".