11719031857 has 8 divisors (see below), whose sum is σ = 12676095936. Its totient is φ = 10769910672.

The previous prime is 11719031837. The next prime is 11719031887. The reversal of 11719031857 is 75813091711.

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 11719031857 - 2¹¹ = 11719029809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11719031837) 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, 1982653 + ... + 1988554.

It is an arithmetic number, because the mean of its divisors is an integer number (1584511992).

Almost surely, 2^11719031857 is an apocalyptic number.

It is an amenable number.

11719031857 is a deficient number, since it is larger than the sum of its proper divisors (957064079).

11719031857 is a wasteful number, since it uses less digits than its factorization.

11719031857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3971447.

The product of its (nonzero) digits is 52920, while the sum is 43.

The spelling of 11719031857 in words is "eleven billion, seven hundred nineteen million, thirty-one thousand, eight hundred fifty-seven".