138231757846 has 64 divisors (see below), whose sum is σ = 257420032128. Its totient is φ = 54210613248.

The previous prime is 138231757793. The next prime is 138231757877. The reversal of 138231757846 is 648757132831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11108340 + ... + 11120776.

It is an arithmetic number, because the mean of its divisors is an integer number (4022188002).

Almost surely, 2^138231757846 is an apocalyptic number.

138231757846 is a deficient number, since it is larger than the sum of its proper divisors (119188274282).

138231757846 is a wasteful number, since it uses less digits than its factorization.

138231757846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12985.

The product of its digits is 6773760, while the sum is 55.

The spelling of 138231757846 in words is "one hundred thirty-eight billion, two hundred thirty-one million, seven hundred fifty-seven thousand, eight hundred forty-six".