27943049997 has 12 divisors (see below), whose sum is σ = 40519237980. Its totient is φ = 18556213248.

The previous prime is 27943049993. The next prime is 27943050029. The reversal of 27943049997 is 79994034972.

27943049997 is a `hidden beast` number, since 2 + 79 + 430 + 49 + 9 + 97 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20838077316 + 7104972681 = 144354^2 + 84291^2 .

It is not a de Polignac number, because 27943049997 - 2² = 27943049993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27943049993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6038122 + ... + 6042747.

It is an arithmetic number, because the mean of its divisors is an integer number (3376603165).

Almost surely, 2^27943049997 is an apocalyptic number.

It is an amenable number.

27943049997 is a deficient number, since it is larger than the sum of its proper divisors (12576187983).

27943049997 is a wasteful number, since it uses less digits than its factorization.

27943049997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12081132 (or 12081129 counting only the distinct ones).

The product of its (nonzero) digits is 30862944, while the sum is 63.

The spelling of 27943049997 in words is "twenty-seven billion, nine hundred forty-three million, forty-nine thousand, nine hundred ninety-seven".