11868143697 has 24 divisors (see below), whose sum is σ = 17197291176. Its totient is φ = 7887027456.

The previous prime is 11868143671. The next prime is 11868143699. The reversal of 11868143697 is 79634186811.

11868143697 is a `hidden beast` number, since 118 + 6 + 8 + 1 + 436 + 97 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3190103361 + 8678040336 = 56481^2 + 93156^2 .

It is not a de Polignac number, because 11868143697 - 2¹⁹ = 11867619409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11868143699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4868763 + ... + 4871199.

It is an arithmetic number, because the mean of its divisors is an integer number (716553799).

Almost surely, 2^11868143697 is an apocalyptic number.

It is an amenable number.

11868143697 is a deficient number, since it is larger than the sum of its proper divisors (5329147479).

11868143697 is a wasteful number, since it uses less digits than its factorization.

11868143697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3937 (or 3934 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The spelling of 11868143697 in words is "eleven billion, eight hundred sixty-eight million, one hundred forty-three thousand, six hundred ninety-seven".