3620541221566 has 8 divisors (see below), whose sum is σ = 5431039201224. Its totient is φ = 1810194821160.

The previous prime is 3620541221503. The next prime is 3620541221569. The reversal of 3620541221566 is 6651221450263.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3620541221569) 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 in 3 ways as a sum of consecutive naturals, for example, 37835080 + ... + 37930651.

It is an arithmetic number, because the mean of its divisors is an integer number (678879900153).

Almost surely, 2^{3620541221566} is an apocalyptic number.

3620541221566 is a deficient number, since it is larger than the sum of its proper divisors (1810497979658).

3620541221566 is a wasteful number, since it uses less digits than its factorization.

3620541221566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75789626.

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 3620541221566 in words is "three trillion, six hundred twenty billion, five hundred forty-one million, two hundred twenty-one thousand, five hundred sixty-six".