138717868750 has 24 divisors (see below), whose sum is σ = 260079369480. Its totient is φ = 55487145000.

The previous prime is 138717868739. The next prime is 138717868763. The reversal of 138717868750 is 57868717831.

It is a super-2 number, since 2×138717868750² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11091180 + ... + 11103679.

It is an arithmetic number, because the mean of its divisors is an integer number (10836640395).

Almost surely, 2^138717868750 is an apocalyptic number.

138717868750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138717868750 is a deficient number, since it is larger than the sum of its proper divisors (121361500730).

138717868750 is an frugal number, since it uses more digits than its factorization.

138717868750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22194886 (or 22194866 counting only the distinct ones).

The product of its (nonzero) digits is 15805440, while the sum is 61.

The spelling of 138717868750 in words is "one hundred thirty-eight billion, seven hundred seventeen million, eight hundred sixty-eight thousand, seven hundred fifty".