130505551520 has 24 divisors (see below), whose sum is σ = 308319365844. Its totient is φ = 52202220544.

The previous prime is 130505551493. The next prime is 130505551523. The reversal of 130505551520 is 25155505031.

It can be written as a sum of positive squares in 2 ways, for example, as 122021667856 + 8483883664 = 349316^2 + 92108^2 .

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

It is not an unprimeable number, because it can be changed into a prime (130505551523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 407829689 + ... + 407830008.

Almost surely, 2^130505551520 is an apocalyptic number.

130505551520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130505551520 is an abundant number, since it is smaller than the sum of its proper divisors (177813814324).

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

130505551520 is an equidigital number, since it uses as much as digits as its factorization.

130505551520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815659712 (or 815659704 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 32.

The spelling of 130505551520 in words is "one hundred thirty billion, five hundred five million, five hundred fifty-one thousand, five hundred twenty".