129216662890 has 32 divisors (see below), whose sum is σ = 281453439744. Its totient is φ = 41696805120.

The previous prime is 129216662863. The next prime is 129216662893. The reversal of 129216662890 is 98266612921.

It is not an unprimeable number, because it can be changed into a prime (129216662893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54291526 + ... + 54293905.

It is an arithmetic number, because the mean of its divisors is an integer number (8795419992).

Almost surely, 2^129216662890 is an apocalyptic number.

129216662890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129216662890 is an abundant number, since it is smaller than the sum of its proper divisors (152236776854).

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

129216662890 is a wasteful number, since it uses less digits than its factorization.

129216662890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108585462.

The product of its (nonzero) digits is 1119744, while the sum is 52.

The spelling of 129216662890 in words is "one hundred twenty-nine billion, two hundred sixteen million, six hundred sixty-two thousand, eight hundred ninety".