221525704443064 has 48 divisors (see below), whose sum is σ = 483333576364080. Its totient is φ = 94908367249920.

The previous prime is 221525704443059. The next prime is 221525704443091. The reversal of 221525704443064 is 460344407525122.

221525704443064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a junction number, because it is equal to n+sod(n) for n = 221525704442999 and 221525704443017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91724172 + ... + 94108315.

It is an arithmetic number, because the mean of its divisors is an integer number (10069449507585).

Almost surely, 2^{221525704443064} is an apocalyptic number.

It is an amenable number.

221525704443064 is an abundant number, since it is smaller than the sum of its proper divisors (261807871921016).

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

221525704443064 is a wasteful number, since it uses less digits than its factorization.

221525704443064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185835548 (or 185835537 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 49.

The spelling of 221525704443064 in words is "two hundred twenty-one trillion, five hundred twenty-five billion, seven hundred four million, four hundred forty-three thousand, sixty-four".