130128033920 has 32 divisors (see below), whose sum is σ = 311087332620. Its totient is φ = 52051213312.

The previous prime is 130128033913. The next prime is 130128033941. The reversal of 130128033920 is 29330821031.

It can be written as a sum of positive squares in 2 ways, for example, as 122886704704 + 7241329216 = 350552^2 + 85096^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101661887 + ... + 101663166.

Almost surely, 2^130128033920 is an apocalyptic number.

130128033920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130128033920 is an abundant number, since it is smaller than the sum of its proper divisors (180959298700).

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

130128033920 is an equidigital number, since it uses as much as digits as its factorization.

130128033920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203325072 (or 203325060 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

Adding to 130128033920 its reverse (29330821031), we get a palindrome (159458854951).

The spelling of 130128033920 in words is "one hundred thirty billion, one hundred twenty-eight million, thirty-three thousand, nine hundred twenty".