220531062164 has 24 divisors (see below), whose sum is σ = 441320302080. Its totient is φ = 94457988576.

The previous prime is 220531062151. The next prime is 220531062211. The reversal of 220531062164 is 461260135022.

It is a self number, because there is not a number n which added to its sum of digits gives 220531062164.

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, 2256452 + ... + 2352155.

It is an arithmetic number, because the mean of its divisors is an integer number (18388345920).

Almost surely, 2^220531062164 is an apocalyptic number.

It is an amenable number.

220531062164 is an abundant number, since it is smaller than the sum of its proper divisors (220789239916).

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

220531062164 is a wasteful number, since it uses less digits than its factorization.

220531062164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4610327 (or 4610325 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 220531062164 its reverse (461260135022), we get a palindrome (681791197186).

The spelling of 220531062164 in words is "two hundred twenty billion, five hundred thirty-one million, sixty-two thousand, one hundred sixty-four".