6650550505161 has 12 divisors (see below), whose sum is σ = 9606706306288. Its totient is φ = 4433536224504.

The previous prime is 6650550505133. The next prime is 6650550505189. The reversal of 6650550505161 is 1615050550566.

It is an interprime number because it is at equal distance from previous prime (6650550505133) and next prime (6650550505189).

It is not a de Polignac number, because 6650550505161 - 2¹⁰ = 6650550504137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6650550500161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13419115 + ... + 13905888.

Almost surely, 2^{6650550505161} is an apocalyptic number.

It is an amenable number.

6650550505161 is a deficient number, since it is larger than the sum of its proper divisors (2956155801127).

6650550505161 is a wasteful number, since it uses less digits than its factorization.

6650550505161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27352052 (or 27352049 counting only the distinct ones).

The product of its (nonzero) digits is 675000, while the sum is 45.

The spelling of 6650550505161 in words is "six trillion, six hundred fifty billion, five hundred fifty million, five hundred five thousand, one hundred sixty-one".