102238661688 has 32 divisors (see below), whose sum is σ = 256155974160. Its totient is φ = 34004977920.

The previous prime is 102238661687. The next prime is 102238661713. The reversal of 102238661688 is 886166832201.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 102238661688.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102238661683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4649803 + ... + 4671738.

Almost surely, 2^102238661688 is an apocalyptic number.

It is an amenable number.

102238661688 is an abundant number, since it is smaller than the sum of its proper divisors (153917312472).

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

102238661688 is a wasteful number, since it uses less digits than its factorization.

102238661688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9322007 (or 9322003 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 51.

The spelling of 102238661688 in words is "one hundred two billion, two hundred thirty-eight million, six hundred sixty-one thousand, six hundred eighty-eight".