11993568497279 has 4 divisors (see below), whose sum is σ = 11994232574280. Its totient is φ = 11992904420280.

The previous prime is 11993568497257. The next prime is 11993568497333. The reversal of 11993568497279 is 97279486539911.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11993568497279 - 2¹² = 11993568493183 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 (11993568407279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332011409 + ... + 332047530.

It is an arithmetic number, because the mean of its divisors is an integer number (2998558143570).

Almost surely, 2^{11993568497279} is an apocalyptic number.

11993568497279 is a deficient number, since it is larger than the sum of its proper divisors (664077001).

11993568497279 is an equidigital number, since it uses as much as digits as its factorization.

11993568497279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664077000.

The product of its digits is 1851776640, while the sum is 80.

The spelling of 11993568497279 in words is "eleven trillion, nine hundred ninety-three billion, five hundred sixty-eight million, four hundred ninety-seven thousand, two hundred seventy-nine".