220515530000000 has 256 divisors, whose sum is σ = 552823145316000. Its totient is φ = 87613632000000.

The previous prime is 220515529999979. The next prime is 220515530000009. The reversal of 220515530000000 is 35515022.

It can be written as a sum of positive squares in 16 ways, for example, as 218243419948096 + 2272110051904 = 14773064^2 + 1507352^2 .

It is not an unprimeable number, because it can be changed into a prime (220515530000009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1489926002 + ... + 1490073998.

Almost surely, 2^{220515530000000} is an apocalyptic number.

220515530000000 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 220515530000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276411572658000).

220515530000000 is an abundant number, since it is smaller than the sum of its proper divisors (332307615316000).

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

220515530000000 is an frugal number, since it uses more digits than its factorization.

220515530000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148195 (or 148153 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 23.

Adding to 220515530000000 its reverse (35515022), we get a palindrome (220515565515022).

The spelling of 220515530000000 in words is "two hundred twenty trillion, five hundred fifteen billion, five hundred thirty million", and thus it is an aban number.