2733161621265 has 20 divisors (see below), whose sum is σ = 4899445277364. Its totient is φ = 1457686197792.

The previous prime is 2733161621257. The next prime is 2733161621297. The reversal of 2733161621265 is 5621261613372.

2733161621265 is a `hidden beast` number, since 2 + 7 + 3 + 3 + 1 + 616 + 2 + 1 + 26 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 530929365201 + 2202232256064 = 728649^2 + 1483992^2 .

It is not a de Polignac number, because 2733161621265 - 2³ = 2733161621257 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2733161621265.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3374273202 + ... + 3374274011.

Almost surely, 2^{2733161621265} is an apocalyptic number.

It is an amenable number.

2733161621265 is a deficient number, since it is larger than the sum of its proper divisors (2166283656099).

2733161621265 is an equidigital number, since it uses as much as digits as its factorization.

2733161621265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6748547230 (or 6748547221 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The spelling of 2733161621265 in words is "two trillion, seven hundred thirty-three billion, one hundred sixty-one million, six hundred twenty-one thousand, two hundred sixty-five".