11894772947828 has 24 divisors (see below), whose sum is σ = 20872538904672. Its totient is φ = 5931205195104.

The previous prime is 11894772947773. The next prime is 11894772947843. The reversal of 11894772947828 is 82874927749811.

It is a Smith number, since the sum of its digits (77) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1370726 + ... + 5066402.

It is an arithmetic number, because the mean of its divisors is an integer number (869689121028).

Almost surely, 2^{11894772947828} is an apocalyptic number.

It is an amenable number.

11894772947828 is a deficient number, since it is larger than the sum of its proper divisors (8977765956844).

11894772947828 is a wasteful number, since it uses less digits than its factorization.

11894772947828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3697871 (or 3697869 counting only the distinct ones).

The product of its digits is 910393344, while the sum is 77.

The spelling of 11894772947828 in words is "eleven trillion, eight hundred ninety-four billion, seven hundred seventy-two million, nine hundred forty-seven thousand, eight hundred twenty-eight".