27991119607 has 12 divisors (see below), whose sum is σ = 30806297368. Its totient is φ = 25414052400.

The previous prime is 27991119589. The next prime is 27991119613. The reversal of 27991119607 is 70691119972.

It is not a de Polignac number, because 27991119607 - 2⁷ = 27991119479 is a prime.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27991119617) 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 11 ways as a sum of consecutive naturals, for example, 51744 + ... + 242197.

Almost surely, 2^27991119607 is an apocalyptic number.

27991119607 is a deficient number, since it is larger than the sum of its proper divisors (2815177761).

27991119607 is a wasteful number, since it uses less digits than its factorization.

27991119607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294750 (or 294739 counting only the distinct ones).

The product of its (nonzero) digits is 428652, while the sum is 52.

The spelling of 27991119607 in words is "twenty-seven billion, nine hundred ninety-one million, one hundred nineteen thousand, six hundred seven".