27211645472 has 90 divisors (see below), whose sum is σ = 59175390645. Its totient is φ = 12317606400.

The previous prime is 27211645471. The next prime is 27211645477. The reversal of 27211645472 is 27454611272.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 25356103696 + 1855541776 = 159236^2 + 43076^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=116644.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27211645471) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 112911272 + ... + 112911512.

Almost surely, 2^27211645472 is an apocalyptic number.

27211645472 is a gapful number since it is divisible by the number (22) 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 27211645472

27211645472 is an abundant number, since it is smaller than the sum of its proper divisors (31963745173).

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

27211645472 is an frugal number, since it uses more digits than its factorization.

27211645472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536 (or 254 counting only the distinct ones).

The product of its digits is 188160, while the sum is 41.

The spelling of 27211645472 in words is "twenty-seven billion, two hundred eleven million, six hundred forty-five thousand, four hundred seventy-two".