102104665866 has 48 divisors (see below), whose sum is σ = 252969859584. Its totient is φ = 29156693472.

The previous prime is 102104665847. The next prime is 102104665867. The reversal of 102104665866 is 668566401201.

102104665866 is a `hidden beast` number, since 1 + 0 + 2 + 1 + 0 + 4 + 66 + 586 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (102104665867) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7440 + ... + 451956.

It is an arithmetic number, because the mean of its divisors is an integer number (5270205408).

Almost surely, 2^102104665866 is an apocalyptic number.

102104665866 is an abundant number, since it is smaller than the sum of its proper divisors (150865193718).

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

102104665866 is a wasteful number, since it uses less digits than its factorization.

102104665866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446355 (or 446352 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 102104665866 in words is "one hundred two billion, one hundred four million, six hundred sixty-five thousand, eight hundred sixty-six".