138297843846 has 24 divisors (see below), whose sum is σ = 301377389040. Its totient is φ = 45832810416.

The previous prime is 138297843821. The next prime is 138297843857. The reversal of 138297843846 is 648348792831.

138297843846 is a `hidden beast` number, since 13 + 82 + 9 + 78 + 438 + 46 = 666.

It is a super-2 number, since 2×138297843846² (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 (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22202706 + ... + 22208933.

It is an arithmetic number, because the mean of its divisors is an integer number (12557391210).

Almost surely, 2^138297843846 is an apocalyptic number.

138297843846 is an abundant number, since it is smaller than the sum of its proper divisors (163079545194).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138297843846 is a wasteful number, since it uses less digits than its factorization.

138297843846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44411820 (or 44411817 counting only the distinct ones).

The product of its digits is 55738368, while the sum is 63.

The spelling of 138297843846 in words is "one hundred thirty-eight billion, two hundred ninety-seven million, eight hundred forty-three thousand, eight hundred forty-six".