664568484050 has 12 divisors (see below), whose sum is σ = 1236097380426. Its totient is φ = 265827393600.

The previous prime is 664568484037. The next prime is 664568484089. The reversal of 664568484050 is 50484865466.

It can be written as a sum of positive squares in 3 ways, for example, as 597079198681 + 67489285369 = 772709^2 + 259787^2 .

It is a super-3 number, since 3×664568484050³ (a number of 36 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6645684791 + ... + 6645684890.

Almost surely, 2^664568484050 is an apocalyptic number.

664568484050 is a deficient number, since it is larger than the sum of its proper divisors (571528896376).

664568484050 is a wasteful number, since it uses less digits than its factorization.

664568484050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13291369693 (or 13291369688 counting only the distinct ones).

The product of its (nonzero) digits is 22118400, while the sum is 56.

The spelling of 664568484050 in words is "six hundred sixty-four billion, five hundred sixty-eight million, four hundred eighty-four thousand, fifty".