27216061272 has 24 divisors (see below), whose sum is σ = 73710166140. Its totient is φ = 9072020400.

The previous prime is 27216061219. The next prime is 27216061289.

It is a happy number.

27216061272 is a `hidden beast` number, since 2 + 7 + 21 + 606 + 1 + 27 + 2 = 666.

27216061272 is nontrivially palindromic in base 10.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×27216061272² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 189000354 + ... + 189000497.

Almost surely, 2^27216061272 is an apocalyptic number.

It is an amenable number.

27216061272 is an abundant number, since it is smaller than the sum of its proper divisors (46494104868).

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

27216061272 is a wasteful number, since it uses less digits than its factorization.

27216061272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378000863 (or 378000856 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The spelling of 27216061272 in words is "twenty-seven billion, two hundred sixteen million, sixty-one thousand, two hundred seventy-two".