139916817108 has 18 divisors (see below), whose sum is σ = 353678621114. Its totient is φ = 46638939024.

The previous prime is 139916817083. The next prime is 139916817151. The reversal of 139916817108 is 801718619931.

It can be written as a sum of positive squares in only one way, i.e., 139515696324 + 401120784 = 373518^2 + 20028^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1943289091 + ... + 1943289162.

Almost surely, 2^139916817108 is an apocalyptic number.

139916817108 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

139916817108 is an abundant number, since it is smaller than the sum of its proper divisors (213761804006).

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

139916817108 is a wasteful number, since it uses less digits than its factorization.

139916817108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3886578263 (or 3886578258 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 54.

The spelling of 139916817108 in words is "one hundred thirty-nine billion, nine hundred sixteen million, eight hundred seventeen thousand, one hundred eight".