41687204666 has 4 divisors (see below), whose sum is σ = 62530807002. Its totient is φ = 20843602332.

The previous prime is 41687204641. The next prime is 41687204719. The reversal of 41687204666 is 66640278614.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20900774041 + 20786430625 = 144571^2 + 144175^2 .

It is a super-3 number, since 3×41687204666³ (a number of 33 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10421801165 + ... + 10421801168.

Almost surely, 2^41687204666 is an apocalyptic number.

41687204666 is a deficient number, since it is larger than the sum of its proper divisors (20843602336).

41687204666 is a wasteful number, since it uses less digits than its factorization.

41687204666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20843602335.

The product of its (nonzero) digits is 2322432, while the sum is 50.

The spelling of 41687204666 in words is "forty-one billion, six hundred eighty-seven million, two hundred four thousand, six hundred sixty-six".