27530115520 has 112 divisors (see below), whose sum is σ = 69557237568. Its totient is φ = 10342645760.

The previous prime is 27530115499. The next prime is 27530115523. The reversal of 27530115520 is 2551103572.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27530115523) 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, 2731290 + ... + 2741350.

It is an arithmetic number, because the mean of its divisors is an integer number (621046764).

Almost surely, 2^27530115520 is an apocalyptic number.

27530115520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27530115520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34778618784).

27530115520 is an abundant number, since it is smaller than the sum of its proper divisors (42027122048).

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

27530115520 is a wasteful number, since it uses less digits than its factorization.

27530115520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10598 (or 10588 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 31.

The spelling of 27530115520 in words is "twenty-seven billion, five hundred thirty million, one hundred fifteen thousand, five hundred twenty".