220451423360 has 512 divisors, whose sum is σ = 634727232000. Its totient is φ = 73156608000.

The previous prime is 220451423327. The next prime is 220451423363. The reversal of 220451423360 is 63324154022.

It is a super-2 number, since 2×220451423360² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (220451423363) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1352462639 + ... + 1352462801.

It is an arithmetic number, because the mean of its divisors is an integer number (1239701625).

Almost surely, 2^220451423360 is an apocalyptic number.

220451423360 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 220451423360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317363616000).

220451423360 is an abundant number, since it is smaller than the sum of its proper divisors (414275808640).

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

220451423360 is a wasteful number, since it uses less digits than its factorization.

220451423360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365 (or 339 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

Adding to 220451423360 its reverse (63324154022), we get a palindrome (283775577382).

The spelling of 220451423360 in words is "two hundred twenty billion, four hundred fifty-one million, four hundred twenty-three thousand, three hundred sixty".