1665414127754 has 24 divisors (see below), whose sum is σ = 2778176059020. Its totient is φ = 747878272128.

The previous prime is 1665414127747. The next prime is 1665414127757. The reversal of 1665414127754 is 4577214145661.

It can be written as a sum of positive squares in 6 ways, for example, as 308550253729 + 1356863874025 = 555473^2 + 1164845^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1665414127696 and 1665414127705.

It is not an unprimeable number, because it can be changed into a prime (1665414127757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66572099 + ... + 66597110.

Almost surely, 2^{1665414127754} is an apocalyptic number.

1665414127754 is a deficient number, since it is larger than the sum of its proper divisors (1112761931266).

1665414127754 is a wasteful number, since it uses less digits than its factorization.

1665414127754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133169274 (or 133169261 counting only the distinct ones).

The product of its digits is 5644800, while the sum is 53.

The spelling of 1665414127754 in words is "one trillion, six hundred sixty-five billion, four hundred fourteen million, one hundred twenty-seven thousand, seven hundred fifty-four".