221413347554744 has 8 divisors (see below), whose sum is σ = 415150026665160. Its totient is φ = 110706673777368.

The previous prime is 221413347554687. The next prime is 221413347554767. The reversal of 221413347554744 is 447455743314122.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 221413347554744.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13838334222164 + ... + 13838334222179.

It is an arithmetic number, because the mean of its divisors is an integer number (51893753333145).

Almost surely, 2^{221413347554744} is an apocalyptic number.

It is an amenable number.

221413347554744 is a deficient number, since it is larger than the sum of its proper divisors (193736679110416).

221413347554744 is a wasteful number, since it uses less digits than its factorization.

221413347554744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27676668444349 (or 27676668444345 counting only the distinct ones).

The product of its digits is 45158400, while the sum is 56.

The spelling of 221413347554744 in words is "two hundred twenty-one trillion, four hundred thirteen billion, three hundred forty-seven million, five hundred fifty-four thousand, seven hundred forty-four".