129389146000 has 40 divisors (see below), whose sum is σ = 312862959864. Its totient is φ = 51755657600.

The previous prime is 129389145997. The next prime is 129389146021. The reversal of 129389146000 is 641983921.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3077142784 + 126312003216 = 55472^2 + 355404^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-3 number, since 3×129389146000³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32345287 + ... + 32349286.

Almost surely, 2^129389146000 is an apocalyptic number.

129389146000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129389146000 is an abundant number, since it is smaller than the sum of its proper divisors (183473813864).

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

129389146000 is an equidigital number, since it uses as much as digits as its factorization.

129389146000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64694596 (or 64694580 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 43.

The spelling of 129389146000 in words is "one hundred twenty-nine billion, three hundred eighty-nine million, one hundred forty-six thousand".