129016543512 has 64 divisors (see below), whose sum is σ = 334077372000. Its totient is φ = 41471058944.

The previous prime is 129016543501. The next prime is 129016543553. The reversal of 129016543512 is 215345610921.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 448498 + ... + 677630.

Almost surely, 2^129016543512 is an apocalyptic number.

129016543512 is a gapful number since it is divisible by the number (12) 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 129016543512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167038686000).

129016543512 is an abundant number, since it is smaller than the sum of its proper divisors (205060828488).

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

129016543512 is a wasteful number, since it uses less digits than its factorization.

129016543512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229980 (or 229976 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 39.

The spelling of 129016543512 in words is "one hundred twenty-nine billion, sixteen million, five hundred forty-three thousand, five hundred twelve".