5515006661506 has 8 divisors (see below), whose sum is σ = 8301949530444. Its totient is φ = 2747690151360.

The previous prime is 5515006661491. The next prime is 5515006661623. The reversal of 5515006661506 is 6051666005155.

It can be written as a sum of positive squares in 2 ways, for example, as 5099426592481 + 415580069025 = 2258191^2 + 644655^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 4906588995 + ... + 4906590118.

Almost surely, 2^{5515006661506} is an apocalyptic number.

5515006661506 is a deficient number, since it is larger than the sum of its proper divisors (2786942868938).

5515006661506 is a wasteful number, since it uses less digits than its factorization.

5515006661506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9813179396.

The product of its (nonzero) digits is 810000, while the sum is 46.

The spelling of 5515006661506 in words is "five trillion, five hundred fifteen billion, six million, six hundred sixty-one thousand, five hundred six".