11243647744697 has 4 divisors (see below), whose sum is σ = 11354970989796. Its totient is φ = 11132324499600.

The previous prime is 11243647744661. The next prime is 11243647744699. The reversal of 11243647744697 is 79644774634211.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10205539441321 + 1038108303376 = 3194611^2 + 1018876^2 .

It is a cyclic number.

It is not a de Polignac number, because 11243647744697 - 2⁴⁰ = 10144136116921 is a prime.

It is a super-2 number, since 2×11243647744697² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11243647744699) 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, 55661622398 + ... + 55661622599.

It is an arithmetic number, because the mean of its divisors is an integer number (2838742747449).

Almost surely, 2^{11243647744697} is an apocalyptic number.

It is an amenable number.

11243647744697 is a deficient number, since it is larger than the sum of its proper divisors (111323245099).

11243647744697 is a wasteful number, since it uses less digits than its factorization.

11243647744697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111323245098.

The product of its digits is 170698752, while the sum is 65.

The spelling of 11243647744697 in words is "eleven trillion, two hundred forty-three billion, six hundred forty-seven million, seven hundred forty-four thousand, six hundred ninety-seven".