215130064000 has 64 divisors (see below), whose sum is σ = 534867161400. Its totient is φ = 86052019200.

The previous prime is 215130063997. The next prime is 215130064003. The reversal of 215130064000 is 460031512.

It is an interprime number because it is at equal distance from previous prime (215130063997) and next prime (215130064003).

It can be written as a sum of positive squares in 4 ways, for example, as 37039311936 + 178090752064 = 192456^2 + 422008^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (215130064003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6706815 + ... + 6738814.

Almost surely, 2^215130064000 is an apocalyptic number.

215130064000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215130064000 is an abundant number, since it is smaller than the sum of its proper divisors (319737097400).

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

215130064000 is an equidigital number, since it uses as much as digits as its factorization.

215130064000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13445658 (or 13445636 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 215130064000 its reverse (460031512), we get a palindrome (215590095512).

The spelling of 215130064000 in words is "two hundred fifteen billion, one hundred thirty million, sixty-four thousand".