139861834128 has 60 divisors (see below), whose sum is σ = 396780815340. Its totient is φ = 45981969408.

The previous prime is 139861834111. The next prime is 139861834141. The reversal of 139861834128 is 821438168931.

139861834128 is a `hidden beast` number, since 1 + 3 + 9 + 8 + 618 + 3 + 4 + 12 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 82123511184 + 57738322944 = 286572^2 + 240288^2 .

It is a super-2 number, since 2×139861834128² (a number of 23 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

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, 6641973 + ... + 6662996.

It is an arithmetic number, because the mean of its divisors is an integer number (6613013589).

Almost surely, 2^139861834128 is an apocalyptic number.

139861834128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

139861834128 is an abundant number, since it is smaller than the sum of its proper divisors (256918981212).

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

139861834128 is a wasteful number, since it uses less digits than its factorization.

139861834128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13305056 (or 13305047 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 54.

The spelling of 139861834128 in words is "one hundred thirty-nine billion, eight hundred sixty-one million, eight hundred thirty-four thousand, one hundred twenty-eight".