220526334664 has 32 divisors (see below), whose sum is σ = 418837248000. Its totient is φ = 108845130240.

The previous prime is 220526334619. The next prime is 220526334671. The reversal of 220526334664 is 466433625022.

It is a self number, because there is not a number n which added to its sum of digits gives 220526334664.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 343177 + ... + 747544.

It is an arithmetic number, because the mean of its divisors is an integer number (13088664000).

Almost surely, 2^220526334664 is an apocalyptic number.

It is an amenable number.

220526334664 is a deficient number, since it is larger than the sum of its proper divisors (198310913336).

220526334664 is a wasteful number, since it uses less digits than its factorization.

220526334664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091053 (or 1091049 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 43.

Adding to 220526334664 its reverse (466433625022), we get a palindrome (686959959686).

The spelling of 220526334664 in words is "two hundred twenty billion, five hundred twenty-six million, three hundred thirty-four thousand, six hundred sixty-four".