1664231560224 has 96 divisors (see below), whose sum is σ = 4499885819520. Its totient is φ = 538223155200.

The previous prime is 1664231560223. The next prime is 1664231560237. The reversal of 1664231560224 is 4220651324661.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (1664231560223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 455604 + ... + 1880435.

It is an arithmetic number, because the mean of its divisors is an integer number (46873810620).

Almost surely, 2^{1664231560224} is an apocalyptic number.

It is an amenable number.

1664231560224 is an abundant number, since it is smaller than the sum of its proper divisors (2835654259296).

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

1664231560224 is a wasteful number, since it uses less digits than its factorization.

1664231560224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2336274 (or 2336266 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 42.

Adding to 1664231560224 its reverse (4220651324661), we get a palindrome (5884882884885).

The spelling of 1664231560224 in words is "one trillion, six hundred sixty-four billion, two hundred thirty-one million, five hundred sixty thousand, two hundred twenty-four".