11918456473 has 8 divisors (see below), whose sum is σ = 14859374400. Its totient is φ = 9287108880.

The previous prime is 11918456399. The next prime is 11918456479. The reversal of 11918456473 is 37465481911.

11918456473 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 11918456473 - 2⁹ = 11918455961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11918456479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77392498 + ... + 77392651.

It is an arithmetic number, because the mean of its divisors is an integer number (1857421800).

Almost surely, 2^11918456473 is an apocalyptic number.

It is an amenable number.

11918456473 is a deficient number, since it is larger than the sum of its proper divisors (2940917927).

11918456473 is a wasteful number, since it uses less digits than its factorization.

11918456473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154785167.

The product of its digits is 725760, while the sum is 49.

The spelling of 11918456473 in words is "eleven billion, nine hundred eighteen million, four hundred fifty-six thousand, four hundred seventy-three".