11893968423 has 16 divisors (see below), whose sum is σ = 17641385440. Its totient is φ = 7920001152.

The previous prime is 11893968409. The next prime is 11893968433. The reversal of 11893968423 is 32486939811.

11893968423 is a `hidden beast` number, since 1 + 189 + 39 + 6 + 8 + 423 = 666.

It is not a de Polignac number, because 11893968423 - 2²⁵ = 11860413991 is a prime.

It is a super-2 number, since 2×11893968423² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11893968423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11893968433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235186 + ... + 281247.

It is an arithmetic number, because the mean of its divisors is an integer number (1102586590).

Almost surely, 2^11893968423 is an apocalyptic number.

11893968423 is a deficient number, since it is larger than the sum of its proper divisors (5747417017).

11893968423 is an equidigital number, since it uses as much as digits as its factorization.

11893968423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517295 (or 517289 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The spelling of 11893968423 in words is "eleven billion, eight hundred ninety-three million, nine hundred sixty-eight thousand, four hundred twenty-three".