11662005541 has 2 divisors, whose sum is σ = 11662005542. Its totient is φ = 11662005540.

The previous prime is 11662005527. The next prime is 11662005577. The reversal of 11662005541 is 14550026611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9129802500 + 2532203041 = 95550^2 + 50321^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11662005541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11662005581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5831002770 + 5831002771.

It is an arithmetic number, because the mean of its divisors is an integer number (5831002771).

Almost surely, 2^11662005541 is an apocalyptic number.

It is an amenable number.

11662005541 is a deficient number, since it is larger than the sum of its proper divisors (1).

11662005541 is an equidigital number, since it uses as much as digits as its factorization.

11662005541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 31.

The spelling of 11662005541 in words is "eleven billion, six hundred sixty-two million, five thousand, five hundred forty-one".