11447994663993 has 32 divisors (see below), whose sum is σ = 16555366051840. Its totient is φ = 7011983194560.

The previous prime is 11447994663971. The next prime is 11447994664003. The reversal of 11447994663993 is 39936649974411.

11447994663993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11447994663993 - 2¹⁸ = 11447994401849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11447994663593) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8193193 + ... + 9488118.

It is an arithmetic number, because the mean of its divisors is an integer number (517355189120).

Almost surely, 2^{11447994663993} is an apocalyptic number.

It is an amenable number.

11447994663993 is a deficient number, since it is larger than the sum of its proper divisors (5107371387847).

11447994663993 is a wasteful number, since it uses less digits than its factorization.

11447994663993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17681677.

The product of its digits is 952342272, while the sum is 75.

The spelling of 11447994663993 in words is "eleven trillion, four hundred forty-seven billion, nine hundred ninety-four million, six hundred sixty-three thousand, nine hundred ninety-three".