129081299466 has 48 divisors (see below), whose sum is σ = 309999087360. Its totient is φ = 35690679360.

The previous prime is 129081299449. The next prime is 129081299491. The reversal of 129081299466 is 664992180921.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7072371 + ... + 7090598.

It is an arithmetic number, because the mean of its divisors is an integer number (6458314320).

Almost surely, 2^129081299466 is an apocalyptic number.

129081299466 is an abundant number, since it is smaller than the sum of its proper divisors (180917787894).

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

129081299466 is a wasteful number, since it uses less digits than its factorization.

129081299466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14163019 (or 14163012 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 57.

It can be divided in two parts, 1290812 and 99466, that added together give a triangular number (1390278 = T₁₆₆₇).

The spelling of 129081299466 in words is "one hundred twenty-nine billion, eighty-one million, two hundred ninety-nine thousand, four hundred sixty-six".