27026972991 has 24 divisors (see below), whose sum is σ = 39845158080. Its totient is φ = 17648366400.

The previous prime is 27026972977. The next prime is 27026972993. The reversal of 27026972991 is 19927962072.

27026972991 is a `hidden beast` number, since 270 + 269 + 7 + 29 + 91 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-27026972991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27026972993) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28221 + ... + 234201.

It is an arithmetic number, because the mean of its divisors is an integer number (1660214920).

Almost surely, 2^27026972991 is an apocalyptic number.

27026972991 is a deficient number, since it is larger than the sum of its proper divisors (12818185089).

27026972991 is a wasteful number, since it uses less digits than its factorization.

27026972991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206287 (or 206284 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 54.

The spelling of 27026972991 in words is "twenty-seven billion, twenty-six million, nine hundred seventy-two thousand, nine hundred ninety-one".