220660400604 has 48 divisors (see below), whose sum is σ = 593635085568. Its totient is φ = 62487898368.

The previous prime is 220660400593. The next prime is 220660400641. The reversal of 220660400604 is 406004066022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11614002 + ... + 11632985.

It is an arithmetic number, because the mean of its divisors is an integer number (12367397616).

Almost surely, 2^220660400604 is an apocalyptic number.

It is an amenable number.

220660400604 is an abundant number, since it is smaller than the sum of its proper divisors (372974684964).

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

220660400604 is a wasteful number, since it uses less digits than its factorization.

220660400604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23247114 (or 23247112 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 220660400604 its reverse (406004066022), we get a palindrome (626664466626).

The spelling of 220660400604 in words is "two hundred twenty billion, six hundred sixty million, four hundred thousand, six hundred four".