3673666261866 has 16 divisors (see below), whose sum is σ = 7584343250688. Its totient is φ = 1185053632800.

The previous prime is 3673666261823. The next prime is 3673666261901. The reversal of 3673666261866 is 6681626663763.

It is a junction number, because it is equal to n+sod(n) for n = 3673666261797 and 3673666261806.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 9875446755 + ... + 9875447126.

It is an arithmetic number, because the mean of its divisors is an integer number (474021453168).

Almost surely, 2^{3673666261866} is an apocalyptic number.

3673666261866 is an abundant number, since it is smaller than the sum of its proper divisors (3910676988822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3673666261866 is a wasteful number, since it uses less digits than its factorization.

3673666261866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19750893917.

The product of its digits is 282175488, while the sum is 66.

The spelling of 3673666261866 in words is "three trillion, six hundred seventy-three billion, six hundred sixty-six million, two hundred sixty-one thousand, eight hundred sixty-six".