128165026672 has 80 divisors (see below), whose sum is σ = 274529571840. Its totient is φ = 57654660096.

The previous prime is 128165026651. The next prime is 128165026673. The reversal of 128165026672 is 276620561821.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128165026673) 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, 11749573 + ... + 11760475.

It is an arithmetic number, because the mean of its divisors is an integer number (3431619648).

Almost surely, 2^128165026672 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 128165026672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137264785920).

128165026672 is an abundant number, since it is smaller than the sum of its proper divisors (146364545168).

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

128165026672 is a wasteful number, since it uses less digits than its factorization.

128165026672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12830 (or 12824 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 128165026672 in words is "one hundred twenty-eight billion, one hundred sixty-five million, twenty-six thousand, six hundred seventy-two".