220451232960 has 784 divisors, whose sum is σ = 907437490176. Its totient is φ = 49945061376.

The previous prime is 220451232959. The next prime is 220451232977. The reversal of 220451232960 is 69232154022.

220451232960 is a `hidden beast` number, since 2 + 20 + 4 + 512 + 32 + 96 + 0 = 666.

It is a super-2 number, since 2×220451232960² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 207385389 + ... + 207386451.

Almost surely, 2^220451232960 is an apocalyptic number.

220451232960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220451232960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (453718745088).

220451232960 is an abundant number, since it is smaller than the sum of its proper divisors (686986257216).

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

220451232960 is a wasteful number, since it uses less digits than its factorization.

220451232960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232 (or 1207 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

Adding to 220451232960 its reverse (69232154022), we get a palindrome (289683386982).

The spelling of 220451232960 in words is "two hundred twenty billion, four hundred fifty-one million, two hundred thirty-two thousand, nine hundred sixty".