221431473347264 has 56 divisors (see below), whose sum is σ = 445965388888368. Its totient is φ = 109062271549440.

The previous prime is 221431473347257. The next prime is 221431473347303. The reversal of 221431473347264 is 462743374134122.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 754374032 + ... + 754667504.

Almost surely, 2^{221431473347264} is an apocalyptic number.

It is an amenable number.

221431473347264 is an abundant number, since it is smaller than the sum of its proper divisors (224533915541104).

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

221431473347264 is a wasteful number, since it uses less digits than its factorization.

221431473347264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469513 (or 469503 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 53.

The spelling of 221431473347264 in words is "two hundred twenty-one trillion, four hundred thirty-one billion, four hundred seventy-three million, three hundred forty-seven thousand, two hundred sixty-four".