27051568220 has 72 divisors (see below), whose sum is σ = 59484201504. Its totient is φ = 10332989568.

The previous prime is 27051568199. The next prime is 27051568249. The reversal of 27051568220 is 2286515072.

It is a super-2 number, since 2×27051568220² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7689902 + ... + 7693418.

Almost surely, 2^27051568220 is an apocalyptic number.

27051568220 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 27051568220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29742100752).

27051568220 is an abundant number, since it is smaller than the sum of its proper divisors (32432633284).

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

27051568220 is a wasteful number, since it uses less digits than its factorization.

27051568220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4299 (or 4274 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 38.

The spelling of 27051568220 in words is "twenty-seven billion, fifty-one million, five hundred sixty-eight thousand, two hundred twenty".