41662606661 has 16 divisors (see below), whose sum is σ = 46650265200. Its totient is φ = 36943108608.

The previous prime is 41662606651. The next prime is 41662606679. The reversal of 41662606661 is 16660626614.

41662606661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 3121456900 + 38541149761 = 55870^2 + 196319^2 .

It is a cyclic number.

It is not a de Polignac number, because 41662606661 - 2³⁰ = 40588864837 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 (41662606621) 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, 206216 + ... + 354753.

It is an arithmetic number, because the mean of its divisors is an integer number (2915641575).

Almost surely, 2^41662606661 is an apocalyptic number.

It is an amenable number.

41662606661 is a deficient number, since it is larger than the sum of its proper divisors (4987658539).

41662606661 is a wasteful number, since it uses less digits than its factorization.

41662606661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561208.

The product of its (nonzero) digits is 373248, while the sum is 44.

The spelling of 41662606661 in words is "forty-one billion, six hundred sixty-two million, six hundred six thousand, six hundred sixty-one".