11748974978 has 48 divisors (see below), whose sum is σ = 19347849216. Its totient is φ = 5348004480.

The previous prime is 11748974953. The next prime is 11748974981. The reversal of 11748974978 is 87947984711.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8198150 + ... + 8199582.

It is an arithmetic number, because the mean of its divisors is an integer number (403080192).

Almost surely, 2^11748974978 is an apocalyptic number.

11748974978 is a deficient number, since it is larger than the sum of its proper divisors (7598874238).

11748974978 is a wasteful number, since it uses less digits than its factorization.

11748974978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1779 (or 1766 counting only the distinct ones).

The product of its digits is 28449792, while the sum is 65.

The spelling of 11748974978 in words is "eleven billion, seven hundred forty-eight million, nine hundred seventy-four thousand, nine hundred seventy-eight".