138385348551880 has 32 divisors (see below), whose sum is σ = 311367397314240. Its totient is φ = 55354074874560.

The previous prime is 138385348551839. The next prime is 138385348551899. The reversal of 138385348551880 is 88155843583831.

It is a happy number.

It is a Smith number, since the sum of its digits (70) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48070375 + ... + 50867785.

It is an arithmetic number, because the mean of its divisors is an integer number (9730231166070).

Almost surely, 2^{138385348551880} is an apocalyptic number.

138385348551880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138385348551880 is an abundant number, since it is smaller than the sum of its proper divisors (172982048762360).

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

138385348551880 is a wasteful number, since it uses less digits than its factorization.

138385348551880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4034149 (or 4034145 counting only the distinct ones).

The product of its (nonzero) digits is 442368000, while the sum is 70.

The spelling of 138385348551880 in words is "one hundred thirty-eight trillion, three hundred eighty-five billion, three hundred forty-eight million, five hundred fifty-one thousand, eight hundred eighty".