11774444521 has 16 divisors (see below), whose sum is σ = 13896463360. Its totient is φ = 9762690240.

The previous prime is 11774444497. The next prime is 11774444531. The reversal of 11774444521 is 12544447711.

It is a cyclic number.

It is not a de Polignac number, because 11774444521 - 2⁷ = 11774444393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11774444531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 570775 + ... + 591043.

It is an arithmetic number, because the mean of its divisors is an integer number (868528960).

Almost surely, 2^11774444521 is an apocalyptic number.

It is an amenable number.

11774444521 is a deficient number, since it is larger than the sum of its proper divisors (2122018839).

11774444521 is a wasteful number, since it uses less digits than its factorization.

11774444521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22984.

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

The spelling of 11774444521 in words is "eleven billion, seven hundred seventy-four million, four hundred forty-four thousand, five hundred twenty-one".