130020303440 has 40 divisors (see below), whose sum is σ = 305939356128. Its totient is φ = 51381514880.

The previous prime is 130020303419. The next prime is 130020303449. The reversal of 130020303440 is 44303020031.

It is a tau number, because it is divible by the number of its divisors (40).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130020303449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9784046 + ... + 9797325.

Almost surely, 2^130020303440 is an apocalyptic number.

130020303440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130020303440 is an abundant number, since it is smaller than the sum of its proper divisors (175919052688).

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

130020303440 is a wasteful number, since it uses less digits than its factorization.

130020303440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19581467 (or 19581461 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 130020303440 its reverse (44303020031), we get a palindrome (174323323471).

The spelling of 130020303440 in words is "one hundred thirty billion, twenty million, three hundred three thousand, four hundred forty".