3645221355186 has 32 divisors (see below), whose sum is σ = 7358629629120. Its totient is φ = 1203713244864.

The previous prime is 3645221355143. The next prime is 3645221355199. The reversal of 3645221355186 is 6815531225463.

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 15 ways as a sum of consecutive naturals, for example, 3226296 + ... + 4207068.

It is an arithmetic number, because the mean of its divisors is an integer number (229957175910).

Almost surely, 2^{3645221355186} is an apocalyptic number.

3645221355186 is an abundant number, since it is smaller than the sum of its proper divisors (3713408273934).

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

3645221355186 is a wasteful number, since it uses less digits than its factorization.

3645221355186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986570.

The product of its digits is 5184000, while the sum is 51.

The spelling of 3645221355186 in words is "three trillion, six hundred forty-five billion, two hundred twenty-one million, three hundred fifty-five thousand, one hundred eighty-six".