305130530520 has 64 divisors (see below), whose sum is σ = 1017101772000. Its totient is φ = 81368141184.

The previous prime is 305130530491. The next prime is 305130530543. The reversal of 305130530520 is 25035031503.

305130530520 is a `hidden beast` number, since 3 + 0 + 5 + 130 + 5 + 3 + 0 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141263055 + ... + 141265214.

Almost surely, 2^305130530520 is an apocalyptic number.

305130530520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

305130530520 is an abundant number, since it is smaller than the sum of its proper divisors (711971241480).

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

305130530520 is a wasteful number, since it uses less digits than its factorization.

305130530520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282528289 (or 282528279 counting only the distinct ones).

The product of its (nonzero) digits is 6750, while the sum is 27.

The spelling of 305130530520 in words is "three hundred five billion, one hundred thirty million, five hundred thirty thousand, five hundred twenty".