138055808558 has 8 divisors (see below), whose sum is σ = 207106154640. Its totient is φ = 69020423680.

The previous prime is 138055808543. The next prime is 138055808593. The reversal of 138055808558 is 855808550831.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3717203 + ... + 3754158.

It is an arithmetic number, because the mean of its divisors is an integer number (25888269330).

Almost surely, 2^138055808558 is an apocalyptic number.

138055808558 is a deficient number, since it is larger than the sum of its proper divisors (69050346082).

138055808558 is an equidigital number, since it uses as much as digits as its factorization.

138055808558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7480602.

The product of its (nonzero) digits is 7680000, while the sum is 56.

The spelling of 138055808558 in words is "one hundred thirty-eight billion, fifty-five million, eight hundred eight thousand, five hundred fifty-eight".