6515552215016 has 16 divisors (see below), whose sum is σ = 13156403511300. Its totient is φ = 3007177945344.

The previous prime is 6515552214989. The next prime is 6515552215021. The reversal of 6515552215016 is 6105122555156.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5814223012900 + 701329202116 = 2411270^2 + 837454^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31324770161 + ... + 31324770368.

Almost surely, 2^{6515552215016} is an apocalyptic number.

It is an amenable number.

6515552215016 is an abundant number, since it is smaller than the sum of its proper divisors (6640851296284).

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

6515552215016 is a wasteful number, since it uses less digits than its factorization.

6515552215016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62649540548 (or 62649540544 counting only the distinct ones).

The product of its (nonzero) digits is 450000, while the sum is 44.

The spelling of 6515552215016 in words is "six trillion, five hundred fifteen billion, five hundred fifty-two million, two hundred fifteen thousand, sixteen".