138768819375 has 20 divisors (see below), whose sum is σ = 231207358712. Its totient is φ = 74010036000.

The previous prime is 138768819361. The next prime is 138768819389. The reversal of 138768819375 is 573918867831.

It is an interprime number because it is at equal distance from previous prime (138768819361) and next prime (138768819389).

It is not a de Polignac number, because 138768819375 - 2⁷ = 138768819247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 37003144 + ... + 37006893.

Almost surely, 2^138768819375 is an apocalyptic number.

138768819375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138768819375 is a deficient number, since it is larger than the sum of its proper divisors (92438539337).

138768819375 is an frugal number, since it uses more digits than its factorization.

138768819375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74010060 (or 74010045 counting only the distinct ones).

The product of its digits is 60963840, while the sum is 66.

The spelling of 138768819375 in words is "one hundred thirty-eight billion, seven hundred sixty-eight million, eight hundred nineteen thousand, three hundred seventy-five".