128313041820 has 48 divisors (see below), whose sum is σ = 359393569920. Its totient is φ = 34205663296.

The previous prime is 128313041807. The next prime is 128313041827. The reversal of 128313041820 is 28140313821.

It is a super-2 number, since 2×128313041820² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128313041827) 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, 161850 + ... + 531809.

It is an arithmetic number, because the mean of its divisors is an integer number (7487366040).

Almost surely, 2^128313041820 is an apocalyptic number.

128313041820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128313041820 is an abundant number, since it is smaller than the sum of its proper divisors (231080528100).

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

128313041820 is a wasteful number, since it uses less digits than its factorization.

128313041820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696754 (or 696752 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The spelling of 128313041820 in words is "one hundred twenty-eight billion, three hundred thirteen million, forty-one thousand, eight hundred twenty".