128952449466 has 32 divisors (see below), whose sum is σ = 259150527168. Its totient is φ = 42777020160.

The previous prime is 128952449449. The next prime is 128952449569. The reversal of 128952449466 is 664944259821.

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, 1034961 + ... + 1152843.

It is an arithmetic number, because the mean of its divisors is an integer number (8098453974).

Almost surely, 2^128952449466 is an apocalyptic number.

128952449466 is an abundant number, since it is smaller than the sum of its proper divisors (130198077702).

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

128952449466 is a wasteful number, since it uses less digits than its factorization.

128952449466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118766.

The product of its digits is 29859840, while the sum is 60.

The spelling of 128952449466 in words is "one hundred twenty-eight billion, nine hundred fifty-two million, four hundred forty-nine thousand, four hundred sixty-six".