264611632220 has 24 divisors (see below), whose sum is σ = 598429384224. Its totient is φ = 97702756416.

The previous prime is 264611632183. The next prime is 264611632231. The reversal of 264611632220 is 22236116462.

It is a super-2 number, since 2×264611632220² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 508868264 + ... + 508868783.

It is an arithmetic number, because the mean of its divisors is an integer number (24934557676).

Almost surely, 2^264611632220 is an apocalyptic number.

264611632220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

264611632220 is an abundant number, since it is smaller than the sum of its proper divisors (333817752004).

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

264611632220 is a wasteful number, since it uses less digits than its factorization.

264611632220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017737069 (or 1017737067 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

Adding to 264611632220 its reverse (22236116462), we get a palindrome (286847748682).

The spelling of 264611632220 in words is "two hundred sixty-four billion, six hundred eleven million, six hundred thirty-two thousand, two hundred twenty".