4520221305672 has 64 divisors (see below), whose sum is σ = 11358202752000. Its totient is φ = 1499054990400.

The previous prime is 4520221305667. The next prime is 4520221305673. The reversal of 4520221305672 is 2765031220254.

It is a self number, because there is not a number n which added to its sum of digits gives 4520221305672.

It is not an unprimeable number, because it can be changed into a prime (4520221305673) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82841103 + ... + 82895649.

It is an arithmetic number, because the mean of its divisors is an integer number (177471918000).

Almost surely, 2^{4520221305672} is an apocalyptic number.

It is an amenable number.

4520221305672 is an abundant number, since it is smaller than the sum of its proper divisors (6837981446328).

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

4520221305672 is a wasteful number, since it uses less digits than its factorization.

4520221305672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72106 (or 72102 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 39.

The spelling of 4520221305672 in words is "four trillion, five hundred twenty billion, two hundred twenty-one million, three hundred five thousand, six hundred seventy-two".