129038887664 has 20 divisors (see below), whose sum is σ = 258633978360. Its totient is φ = 62294635200.

The previous prime is 129038887643. The next prime is 129038887673. The reversal of 129038887664 is 466788830921.

It is a super-2 number, since 2×129038887664² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 129038887597 and 129038887606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139050062 + ... + 139050989.

It is an arithmetic number, because the mean of its divisors is an integer number (12931698918).

Almost surely, 2^129038887664 is an apocalyptic number.

It is an amenable number.

129038887664 is an abundant number, since it is smaller than the sum of its proper divisors (129595090696).

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

129038887664 is a wasteful number, since it uses less digits than its factorization.

129038887664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278101088 (or 278101082 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 62.

The spelling of 129038887664 in words is "one hundred twenty-nine billion, thirty-eight million, eight hundred eighty-seven thousand, six hundred sixty-four".