102139845328 has 20 divisors (see below), whose sum is σ = 204719949540. Its totient is φ = 49308890624.

The previous prime is 102139845323. The next prime is 102139845331. The reversal of 102139845328 is 823548931201.

It can be written as a sum of positive squares in 2 ways, for example, as 77957107264 + 24182738064 = 279208^2 + 155508^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102139845323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110064025 + ... + 110064952.

It is an arithmetic number, because the mean of its divisors is an integer number (10235997477).

Almost surely, 2^102139845328 is an apocalyptic number.

It is an amenable number.

102139845328 is an abundant number, since it is smaller than the sum of its proper divisors (102580104212).

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

102139845328 is a wasteful number, since it uses less digits than its factorization.

102139845328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220129014 (or 220129008 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 46.

The spelling of 102139845328 in words is "one hundred two billion, one hundred thirty-nine million, eight hundred forty-five thousand, three hundred twenty-eight".