11774675621 has 4 divisors (see below), whose sum is σ = 11804945100. Its totient is φ = 11744406144.

The previous prime is 11774675581. The next prime is 11774675707. The reversal of 11774675621 is 12657647711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12657647711 = 107 ⋅118295773.

It can be written as a sum of positive squares in 2 ways, for example, as 3418156225 + 8356519396 = 58465^2 + 91414^2 .

It is a cyclic number.

It is not a de Polignac number, because 11774675621 - 2⁶ = 11774675557 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 (11774675221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15134156 + ... + 15134933.

It is an arithmetic number, because the mean of its divisors is an integer number (2951236275).

Almost surely, 2^11774675621 is an apocalyptic number.

It is an amenable number.

11774675621 is a deficient number, since it is larger than the sum of its proper divisors (30269479).

11774675621 is an equidigital number, since it uses as much as digits as its factorization.

11774675621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30269478.

The product of its digits is 493920, while the sum is 47.

The spelling of 11774675621 in words is "eleven billion, seven hundred seventy-four million, six hundred seventy-five thousand, six hundred twenty-one".