11744939866 has 8 divisors (see below), whose sum is σ = 19218992544. Its totient is φ = 5338609020.

The previous prime is 11744939861. The next prime is 11744939881. The reversal of 11744939866 is 66893944711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×11744939866² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11744939866.

It is not an unprimeable number, because it can be changed into a prime (11744939861) 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, 266930430 + ... + 266930473.

It is an arithmetic number, because the mean of its divisors is an integer number (2402374068).

Almost surely, 2^11744939866 is an apocalyptic number.

11744939866 is a deficient number, since it is larger than the sum of its proper divisors (7474052678).

11744939866 is a wasteful number, since it uses less digits than its factorization.

11744939866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533860916.

The product of its digits is 7838208, while the sum is 58.

The spelling of 11744939866 in words is "eleven billion, seven hundred forty-four million, nine hundred thirty-nine thousand, eight hundred sixty-six".