129444966000 has 1200 divisors, whose sum is σ = 568350319680. Its totient is φ = 28261094400.

The previous prime is 129444965987. The next prime is 129444966059. The reversal of 129444966000 is 669444921.

129444966000 is a `hidden beast` number, since 12 + 94 + 4 + 496 + 60 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1200).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 182573646 + ... + 182574354.

Almost surely, 2^129444966000 is an apocalyptic number.

129444966000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129444966000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284175159840).

129444966000 is an abundant number, since it is smaller than the sum of its proper divisors (438905353680).

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

129444966000 is a wasteful number, since it uses less digits than its factorization.

129444966000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781 (or 749 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 129444966000 in words is "one hundred twenty-nine billion, four hundred forty-four million, nine hundred sixty-six thousand".