129012922326 has 16 divisors (see below), whose sum is σ = 258030572544. Its totient is φ = 43003519464.

The previous prime is 129012922321. The next prime is 129012922349. The reversal of 129012922326 is 623229210921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129012922321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228411 + ... + 556953.

It is an arithmetic number, because the mean of its divisors is an integer number (16126910784).

Almost surely, 2^129012922326 is an apocalyptic number.

129012922326 is an abundant number, since it is smaller than the sum of its proper divisors (129017650218).

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

129012922326 is a wasteful number, since it uses less digits than its factorization.

129012922326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393995.

The product of its (nonzero) digits is 46656, while the sum is 39.

The spelling of 129012922326 in words is "one hundred twenty-nine billion, twelve million, nine hundred twenty-two thousand, three hundred twenty-six".