130505551521 has 8 divisors (see below), whose sum is σ = 174012778944. Its totient is φ = 87001012560.

The previous prime is 130505551493. The next prime is 130505551523. The reversal of 130505551521 is 125155505031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 130505551521 - 2³³ = 121915616929 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (130505551523) 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, 555981 + ... + 755066.

It is an arithmetic number, because the mean of its divisors is an integer number (21751597368).

Almost surely, 2^130505551521 is an apocalyptic number.

It is an amenable number.

130505551521 is a deficient number, since it is larger than the sum of its proper divisors (43507227423).

130505551521 is a wasteful number, since it uses less digits than its factorization.

130505551521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344231.

The product of its (nonzero) digits is 18750, while the sum is 33.

The spelling of 130505551521 in words is "one hundred thirty billion, five hundred five million, five hundred fifty-one thousand, five hundred twenty-one".