130440321020 has 48 divisors (see below), whose sum is σ = 294122985408. Its totient is φ = 48415288320.

The previous prime is 130440321001. The next prime is 130440321023. The reversal of 130440321020 is 20123044031.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 130440320983 and 130440321001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130440321023) 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, 2677607 + ... + 2725886.

It is an arithmetic number, because the mean of its divisors is an integer number (6127562196).

Almost surely, 2^130440321020 is an apocalyptic number.

130440321020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130440321020 is an abundant number, since it is smaller than the sum of its proper divisors (163682664388).

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

130440321020 is a wasteful number, since it uses less digits than its factorization.

130440321020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5403590 (or 5403588 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 130440321020 its reverse (20123044031), we get a palindrome (150563365051).

The spelling of 130440321020 in words is "one hundred thirty billion, four hundred forty million, three hundred twenty-one thousand, twenty".