11919996943 has 8 divisors (see below), whose sum is σ = 12068002800. Its totient is φ = 11772095808.

The previous prime is 11919996929. The next prime is 11919996983. The reversal of 11919996943 is 34969991911.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 11919996943 - 2⁵ = 11919996911 is a prime.

It is a super-2 number, since 2×11919996943² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11919996983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216763 + ... + 266131.

It is an arithmetic number, because the mean of its divisors is an integer number (1508500350).

Almost surely, 2^11919996943 is an apocalyptic number.

11919996943 is a deficient number, since it is larger than the sum of its proper divisors (148005857).

11919996943 is an equidigital number, since it uses as much as digits as its factorization.

11919996943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52361.

The product of its digits is 4251528, while the sum is 61.

The spelling of 11919996943 in words is "eleven billion, nine hundred nineteen million, nine hundred ninety-six thousand, nine hundred forty-three".