129384018864 has 60 divisors (see below), whose sum is σ = 362913103176. Its totient is φ = 43030630656.

The previous prime is 129384018817. The next prime is 129384018871. The reversal of 129384018864 is 468810483921.

It is a happy number.

129384018864 is a `hidden beast` number, since 1 + 29 + 384 + 0 + 188 + 64 = 666.

129384018864 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 129384018864.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 950317 + ... + 1077900.

Almost surely, 2^129384018864 is an apocalyptic number.

It is an amenable number.

129384018864 is an abundant number, since it is smaller than the sum of its proper divisors (233529084312).

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

129384018864 is a wasteful number, since it uses less digits than its factorization.

129384018864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2028674 (or 2028665 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 54.

The spelling of 129384018864 in words is "one hundred twenty-nine billion, three hundred eighty-four million, eighteen thousand, eight hundred sixty-four".