27272240207991 has 6 divisors (see below), whose sum is σ = 39393235856000. Its totient is φ = 18181493471988.

The previous prime is 27272240207951. The next prime is 27272240208023. The reversal of 27272240207991 is 19970204227272.

27272240207991 is a `hidden beast` number, since 27 + 272 + 240 + 20 + 7 + 9 + 91 = 666.

It is not a de Polignac number, because 27272240207991 - 2¹⁴ = 27272240191607 is a prime.

It is a super-3 number, since 3×27272240207991³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27272240207951) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1515124455991 + ... + 1515124456008.

Almost surely, 2^{27272240207991} is an apocalyptic number.

27272240207991 is a deficient number, since it is larger than the sum of its proper divisors (12120995648009).

27272240207991 is a wasteful number, since it uses less digits than its factorization.

27272240207991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3030248912005 (or 3030248912002 counting only the distinct ones).

The product of its (nonzero) digits is 3556224, while the sum is 54.

The spelling of 27272240207991 in words is "twenty-seven trillion, two hundred seventy-two billion, two hundred forty million, two hundred seven thousand, nine hundred ninety-one".