11421745447 has 16 divisors (see below), whose sum is σ = 13154877760. Its totient is φ = 9714152448.

The previous prime is 11421745417. The next prime is 11421745463. The reversal of 11421745447 is 74454712411.

It is not a de Polignac number, because 11421745447 - 2⁷ = 11421745319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11421745417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 825079 + ... + 838807.

It is an arithmetic number, because the mean of its divisors is an integer number (822179860).

Almost surely, 2^11421745447 is an apocalyptic number.

11421745447 is a deficient number, since it is larger than the sum of its proper divisors (1733132313).

11421745447 is a wasteful number, since it uses less digits than its factorization.

11421745447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14650.

The product of its digits is 125440, while the sum is 40.

The spelling of 11421745447 in words is "eleven billion, four hundred twenty-one million, seven hundred forty-five thousand, four hundred forty-seven".