128666373600 has 288 divisors, whose sum is σ = 443120388480. Its totient is φ = 32337930240.

The previous prime is 128666373571. The next prime is 128666373613. The reversal of 128666373600 is 6373666821.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 128666373600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8976039 + ... + 8990361.

It is an arithmetic number, because the mean of its divisors is an integer number (1538612460).

Almost surely, 2^128666373600 is an apocalyptic number.

128666373600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128666373600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221560194240).

128666373600 is an abundant number, since it is smaller than the sum of its proper divisors (314454014880).

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

128666373600 is a wasteful number, since it uses less digits than its factorization.

128666373600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14562 (or 14549 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 48.

The spelling of 128666373600 in words is "one hundred twenty-eight billion, six hundred sixty-six million, three hundred seventy-three thousand, six hundred".