221655675062752 has 48 divisors (see below), whose sum is σ = 503300730129120. Its totient is φ = 94123772886528.

The previous prime is 221655675062683. The next prime is 221655675062791. The reversal of 221655675062752 is 257260576556122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4539123583 + ... + 4539172414.

It is an arithmetic number, because the mean of its divisors is an integer number (10485431877690).

Almost surely, 2^{221655675062752} is an apocalyptic number.

It is an amenable number.

221655675062752 is an abundant number, since it is smaller than the sum of its proper divisors (281645055066368).

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

221655675062752 is a wasteful number, since it uses less digits than its factorization.

221655675062752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9078296123 (or 9078296115 counting only the distinct ones).

The product of its (nonzero) digits is 105840000, while the sum is 61.

The spelling of 221655675062752 in words is "two hundred twenty-one trillion, six hundred fifty-five billion, six hundred seventy-five million, sixty-two thousand, seven hundred fifty-two".