27764959491 has 32 divisors (see below), whose sum is σ = 41642990400. Its totient is φ = 18281687040.

The previous prime is 27764959477. The next prime is 27764959501. The reversal of 27764959491 is 19495946772.

27764959491 is a `hidden beast` number, since 27 + 76 + 4 + 9 + 59 + 491 = 666.

It is not a de Polignac number, because 27764959491 - 2¹¹ = 27764957443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27764959421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 918051 + ... + 947811.

It is an arithmetic number, because the mean of its divisors is an integer number (1301343450).

Almost surely, 2^27764959491 is an apocalyptic number.

27764959491 is a deficient number, since it is larger than the sum of its proper divisors (13878030909).

27764959491 is a wasteful number, since it uses less digits than its factorization.

27764959491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30196 (or 30190 counting only the distinct ones).

The product of its digits is 34292160, while the sum is 63.

The spelling of 27764959491 in words is "twenty-seven billion, seven hundred sixty-four million, nine hundred fifty-nine thousand, four hundred ninety-one".