128466646429792 has 192 divisors, whose sum is σ = 288639510082560. Its totient is φ = 55747164211200.

The previous prime is 128466646429783. The next prime is 128466646429943. The reversal of 128466646429792 is 297924646664821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 686486317 + ... + 686673427.

It is an arithmetic number, because the mean of its divisors is an integer number (1503330781680).

Almost surely, 2^{128466646429792} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128466646429792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144319755041280).

128466646429792 is an abundant number, since it is smaller than the sum of its proper divisors (160172863652768).

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

128466646429792 is a wasteful number, since it uses less digits than its factorization.

128466646429792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187917 (or 187909 counting only the distinct ones).

The product of its digits is 3009871872, while the sum is 76.

The spelling of 128466646429792 in words is "one hundred twenty-eight trillion, four hundred sixty-six billion, six hundred forty-six million, four hundred twenty-nine thousand, seven hundred ninety-two".