11685718994 has 8 divisors (see below), whose sum is σ = 17616662400. Its totient is φ = 5813498196.

The previous prime is 11685718897. The next prime is 11685718999. The reversal of 11685718994 is 49981758611.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11685718999) 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, 14680154 + ... + 14680949.

It is an arithmetic number, because the mean of its divisors is an integer number (2202082800).

Almost surely, 2^11685718994 is an apocalyptic number.

11685718994 is a deficient number, since it is larger than the sum of its proper divisors (5930943406).

11685718994 is a wasteful number, since it uses less digits than its factorization.

11685718994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29361304.

The product of its digits is 4354560, while the sum is 59.

The spelling of 11685718994 in words is "eleven billion, six hundred eighty-five million, seven hundred eighteen thousand, nine hundred ninety-four".