221261616341562 has 8 divisors (see below), whose sum is σ = 442523232683136. Its totient is φ = 73753872113852.

The previous prime is 221261616341539. The next prime is 221261616341569. The reversal of 221261616341562 is 265143616162122.

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

221261616341562 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (221261616341569) 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, 18438468028458 + ... + 18438468028469.

It is an arithmetic number, because the mean of its divisors is an integer number (55315404085392).

Almost surely, 2^{221261616341562} is an apocalyptic number.

221261616341562 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

221261616341562 is a wasteful number, since it uses less digits than its factorization.

221261616341562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36876936056932.

The product of its digits is 1244160, while the sum is 48.

The spelling of 221261616341562 in words is "two hundred twenty-one trillion, two hundred sixty-one billion, six hundred sixteen million, three hundred forty-one thousand, five hundred sixty-two".