220451215340 has 12 divisors (see below), whose sum is σ = 462947552256. Its totient is φ = 88180486128.

The previous prime is 220451215319. The next prime is 220451215379. The reversal of 220451215340 is 43512154022.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5511280364 + ... + 5511280403.

It is an arithmetic number, because the mean of its divisors is an integer number (38578962688).

Almost surely, 2^220451215340 is an apocalyptic number.

220451215340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220451215340 is an abundant number, since it is smaller than the sum of its proper divisors (242496336916).

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

220451215340 is a wasteful number, since it uses less digits than its factorization.

220451215340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11022560776 (or 11022560774 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 220451215340 its reverse (43512154022), we get a palindrome (263963369362).

The spelling of 220451215340 in words is "two hundred twenty billion, four hundred fifty-one million, two hundred fifteen thousand, three hundred forty".