102147236808 has 128 divisors (see below), whose sum is σ = 265230028800. Its totient is φ = 32760820224.

The previous prime is 102147236767. The next prime is 102147236831. The reversal of 102147236808 is 808632741201.

102147236808 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 102147236808.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48896628 + ... + 48898716.

It is an arithmetic number, because the mean of its divisors is an integer number (2072109600).

Almost surely, 2^102147236808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102147236808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132615014400).

102147236808 is an abundant number, since it is smaller than the sum of its proper divisors (163082791992).

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

102147236808 is a wasteful number, since it uses less digits than its factorization.

102147236808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2859 (or 2855 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The spelling of 102147236808 in words is "one hundred two billion, one hundred forty-seven million, two hundred thirty-six thousand, eight hundred eight".