139684727808 has 264 divisors, whose sum is σ = 419391488880. Its totient is φ = 44724879360.

The previous prime is 139684727681. The next prime is 139684727813. The reversal of 139684727808 is 808727486931.

139684727808 is a `hidden beast` number, since 1 + 3 + 96 + 8 + 472 + 78 + 0 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56391466 + ... + 56393942.

Almost surely, 2^139684727808 is an apocalyptic number.

139684727808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139684727808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209695744440).

139684727808 is an abundant number, since it is smaller than the sum of its proper divisors (279706761072).

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

139684727808 is a wasteful number, since it uses less digits than its factorization.

139684727808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2743 (or 2722 counting only the distinct ones).

The product of its (nonzero) digits is 32514048, while the sum is 63.

The spelling of 139684727808 in words is "one hundred thirty-nine billion, six hundred eighty-four million, seven hundred twenty-seven thousand, eight hundred eight".