221413237466464 has 24 divisors (see below), whose sum is σ = 435951020635200. Its totient is φ = 110695517940096.

The previous prime is 221413237466453. The next prime is 221413237466503. The reversal of 221413237466464 is 464664732314122.

221413237466464 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346575664 + ... + 347213935.

It is an arithmetic number, because the mean of its divisors is an integer number (18164625859800).

Almost surely, 2^{221413237466464} is an apocalyptic number.

It is an amenable number.

221413237466464 is a deficient number, since it is larger than the sum of its proper divisors (214537783168736).

221413237466464 is an equidigital number, since it uses as much as digits as its factorization.

221413237466464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693799582 (or 693799574 counting only the distinct ones).

The product of its digits is 27869184, while the sum is 55.

The spelling of 221413237466464 in words is "two hundred twenty-one trillion, four hundred thirteen billion, two hundred thirty-seven million, four hundred sixty-six thousand, four hundred sixty-four".