220001620002644 has 12 divisors (see below), whose sum is σ = 386240786244768. Its totient is φ = 109647109647000.

The previous prime is 220001620002631. The next prime is 220001620002653. The reversal of 220001620002644 is 446200026100022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88425087182 + ... + 88425089669.

It is an arithmetic number, because the mean of its divisors is an integer number (32186732187064).

Almost surely, 2^{220001620002644} is an apocalyptic number.

It is an amenable number.

220001620002644 is a deficient number, since it is larger than the sum of its proper divisors (166239166242124).

220001620002644 is a wasteful number, since it uses less digits than its factorization.

220001620002644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176850177166 (or 176850177164 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 220001620002644 its reverse (446200026100022), we get a palindrome (666201646102666).

The spelling of 220001620002644 in words is "two hundred twenty trillion, one billion, six hundred twenty million, two thousand, six hundred forty-four".