11988975946 has 8 divisors (see below), whose sum is σ = 18929962080. Its totient is φ = 5678988588.

The previous prime is 11988975941. The next prime is 11988975967. The reversal of 11988975946 is 64957988911.

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

It is not an unprimeable number, because it can be changed into a prime (11988975941) 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, 157749646 + ... + 157749721.

It is an arithmetic number, because the mean of its divisors is an integer number (2366245260).

Almost surely, 2^11988975946 is an apocalyptic number.

11988975946 is a deficient number, since it is larger than the sum of its proper divisors (6940986134).

11988975946 is a wasteful number, since it uses less digits than its factorization.

11988975946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315499388.

The product of its digits is 39191040, while the sum is 67.

The spelling of 11988975946 in words is "eleven billion, nine hundred eighty-eight million, nine hundred seventy-five thousand, nine hundred forty-six".