138543377488 has 20 divisors (see below), whose sum is σ = 274974814548. Its totient is φ = 67582135040.

The previous prime is 138543377411. The next prime is 138543377503. The reversal of 138543377488 is 884773345831.

It can be written as a sum of positive squares in 2 ways, for example, as 28483987984 + 110059389504 = 168772^2 + 331752^2 .

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, 105596431 + ... + 105597742.

Almost surely, 2^138543377488 is an apocalyptic number.

It is an amenable number.

138543377488 is a deficient number, since it is larger than the sum of its proper divisors (136431437060).

138543377488 is a wasteful number, since it uses less digits than its factorization.

138543377488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211194222 (or 211194216 counting only the distinct ones).

The product of its digits is 54190080, while the sum is 61.

The spelling of 138543377488 in words is "one hundred thirty-eight billion, five hundred forty-three million, three hundred seventy-seven thousand, four hundred eighty-eight".