215480369288 has 36 divisors (see below), whose sum is σ = 406061938485. Its totient is φ = 107199904896.

The previous prime is 215480369239. The next prime is 215480369317. The reversal of 215480369288 is 882963084512.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 203366725444 + 12113643844 = 450962^2 + 110062^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=328238.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 442464581 + ... + 442465067.

Almost surely, 2^215480369288 is an apocalyptic number.

It is an amenable number.

215480369288 is a deficient number, since it is larger than the sum of its proper divisors (190581569197).

215480369288 is an frugal number, since it uses more digits than its factorization.

215480369288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1654 (or 826 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 56.

The spelling of 215480369288 in words is "two hundred fifteen billion, four hundred eighty million, three hundred sixty-nine thousand, two hundred eighty-eight".