221573843370672 has 80 divisors (see below), whose sum is σ = 618082422463968. Its totient is φ = 67993788119040.

The previous prime is 221573843370667. The next prime is 221573843370707. The reversal of 221573843370672 is 276073348375122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 475754229 + ... + 476219732.

Almost surely, 2^{221573843370672} is an apocalyptic number.

It is an amenable number.

221573843370672 is an abundant number, since it is smaller than the sum of its proper divisors (396508579093296).

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

221573843370672 is a wasteful number, since it uses less digits than its factorization.

221573843370672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951974358 (or 951974352 counting only the distinct ones).

The product of its (nonzero) digits is 71124480, while the sum is 60.

The spelling of 221573843370672 in words is "two hundred twenty-one trillion, five hundred seventy-three billion, eight hundred forty-three million, three hundred seventy thousand, six hundred seventy-two".