3661211710664 has 64 divisors (see below), whose sum is σ = 6918086361600. Its totient is φ = 1816458976000.

The previous prime is 3661211710661. The next prime is 3661211710747. The reversal of 3661211710664 is 4660171121663.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (3661211710661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 600097214 + ... + 600103314.

It is an arithmetic number, because the mean of its divisors is an integer number (108095099400).

Almost surely, 2^{3661211710664} is an apocalyptic number.

It is an amenable number.

3661211710664 is a deficient number, since it is larger than the sum of its proper divisors (3256874650936).

3661211710664 is a wasteful number, since it uses less digits than its factorization.

3661211710664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7454 (or 7450 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 3661211710664 in words is "three trillion, six hundred sixty-one billion, two hundred eleven million, seven hundred ten thousand, six hundred sixty-four".