11664154609 has 2 divisors, whose sum is σ = 11664154610. Its totient is φ = 11664154608.

The previous prime is 11664154603. The next prime is 11664154639. The reversal of 11664154609 is 90645146611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11614803984 + 49350625 = 107772^2 + 7025^2 .

It is a cyclic number.

It is not a de Polignac number, because 11664154609 - 2⁹ = 11664154097 is a prime.

It is not a weakly prime, because it can be changed into another prime (11664154603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5832077304 + 5832077305.

It is an arithmetic number, because the mean of its divisors is an integer number (5832077305).

Almost surely, 2^11664154609 is an apocalyptic number.

It is an amenable number.

11664154609 is a deficient number, since it is larger than the sum of its proper divisors (1).

11664154609 is an equidigital number, since it uses as much as digits as its factorization.

11664154609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 43.

It can be divided in two parts, 1166415 and 4609, that multiplied together give a palindrome (5376006735).

The spelling of 11664154609 in words is "eleven billion, six hundred sixty-four million, one hundred fifty-four thousand, six hundred nine".