2661314424165 has 16 divisors (see below), whose sum is σ = 4731225643200. Its totient is φ = 1419367692816.

The previous prime is 2661314424163. The next prime is 2661314424211. The reversal of 2661314424165 is 5614244131662.

2661314424165 is a `hidden beast` number, since 2 + 6 + 61 + 3 + 1 + 4 + 424 + 165 = 666.

It is not a de Polignac number, because 2661314424165 - 2¹ = 2661314424163 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2661314424165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661314424163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9856719955 + ... + 9856720224.

It is an arithmetic number, because the mean of its divisors is an integer number (295701602700).

Almost surely, 2^{2661314424165} is an apocalyptic number.

It is an amenable number.

2661314424165 is a deficient number, since it is larger than the sum of its proper divisors (2069911219035).

2661314424165 is a wasteful number, since it uses less digits than its factorization.

2661314424165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19713440193 (or 19713440187 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The spelling of 2661314424165 in words is "two trillion, six hundred sixty-one billion, three hundred fourteen million, four hundred twenty-four thousand, one hundred sixty-five".