27969216197 has 16 divisors (see below), whose sum is σ = 30282432768. Its totient is φ = 25679263680.

The previous prime is 27969216193. The next prime is 27969216241. The reversal of 27969216197 is 79161296972.

It is a cyclic number.

It is not a de Polignac number, because 27969216197 - 2² = 27969216193 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27969216193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8290403 + ... + 8293775.

It is an arithmetic number, because the mean of its divisors is an integer number (1892652048).

Almost surely, 2^27969216197 is an apocalyptic number.

It is an amenable number.

27969216197 is a deficient number, since it is larger than the sum of its proper divisors (2313216571).

27969216197 is a wasteful number, since it uses less digits than its factorization.

27969216197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6620.

The product of its digits is 5143824, while the sum is 59.

The spelling of 27969216197 in words is "twenty-seven billion, nine hundred sixty-nine million, two hundred sixteen thousand, one hundred ninety-seven".