11994430857 has 8 divisors (see below), whose sum is σ = 15995547360. Its totient is φ = 7994800800.

The previous prime is 11994430853. The next prime is 11994430883. The reversal of 11994430857 is 75803449911.

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

It is not a de Polignac number, because 11994430857 - 2² = 11994430853 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11994430853) 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 7 ways as a sum of consecutive naturals, for example, 352644 + ... + 385157.

It is an arithmetic number, because the mean of its divisors is an integer number (1999443420).

Almost surely, 2^11994430857 is an apocalyptic number.

It is an amenable number.

11994430857 is a deficient number, since it is larger than the sum of its proper divisors (4001116503).

11994430857 is an equidigital number, since it uses as much as digits as its factorization.

11994430857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743223.

The product of its (nonzero) digits is 1088640, while the sum is 51.

The spelling of 11994430857 in words is "eleven billion, nine hundred ninety-four million, four hundred thirty thousand, eight hundred fifty-seven".