11673969697 has 4 divisors (see below), whose sum is σ = 12571967380. Its totient is φ = 10775972016.

The previous prime is 11673969673. The next prime is 11673969731. The reversal of 11673969697 is 79696937611.

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 1779489856 + 9894479841 = 42184^2 + 99471^2 .

It is a cyclic number.

It is not a de Polignac number, because 11673969697 - 2¹⁹ = 11673445409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11673964697) 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, 448998822 + ... + 448998847.

It is an arithmetic number, because the mean of its divisors is an integer number (3142991845).

Almost surely, 2^11673969697 is an apocalyptic number.

It is an amenable number.

11673969697 is a deficient number, since it is larger than the sum of its proper divisors (897997683).

11673969697 is an equidigital number, since it uses as much as digits as its factorization.

11673969697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897997682.

The product of its digits is 23147208, while the sum is 64.

The spelling of 11673969697 in words is "eleven billion, six hundred seventy-three million, nine hundred sixty-nine thousand, six hundred ninety-seven".