139685521136 has 40 divisors (see below), whose sum is σ = 314374221024. Its totient is φ = 58883823360.

The previous prime is 139685521117. The next prime is 139685521141. The reversal of 139685521136 is 631125586931.

139685521136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10216055 + ... + 10229718.

Almost surely, 2^139685521136 is an apocalyptic number.

139685521136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

139685521136 is an abundant number, since it is smaller than the sum of its proper divisors (174688699888).

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

139685521136 is a wasteful number, since it uses less digits than its factorization.

139685521136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20445849 (or 20445843 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 50.

The spelling of 139685521136 in words is "one hundred thirty-nine billion, six hundred eighty-five million, five hundred twenty-one thousand, one hundred thirty-six".