138231757882 has 8 divisors (see below), whose sum is σ = 218260670400. Its totient is φ = 65478201084.

The previous prime is 138231757877. The next prime is 138231757883. The reversal of 138231757882 is 288757132831.

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

It is not an unprimeable number, because it can be changed into a prime (138231757883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1818838882 + ... + 1818838957.

It is an arithmetic number, because the mean of its divisors is an integer number (27282583800).

Almost surely, 2^138231757882 is an apocalyptic number.

138231757882 is a deficient number, since it is larger than the sum of its proper divisors (80028912518).

138231757882 is a wasteful number, since it uses less digits than its factorization.

138231757882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3637677860.

The product of its digits is 4515840, while the sum is 55.

The spelling of 138231757882 in words is "one hundred thirty-eight billion, two hundred thirty-one million, seven hundred fifty-seven thousand, eight hundred eighty-two".