2421034426665 has 12 divisors (see below), whose sum is σ = 4196459672964. Its totient is φ = 1291218360864.

The previous prime is 2421034426649. The next prime is 2421034426669. The reversal of 2421034426665 is 5666244301242.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1908716322969 + 512318103696 = 1381563^2 + 715764^2 .

It is not a de Polignac number, because 2421034426665 - 2⁴ = 2421034426649 is a prime.

It is a super-2 number, since 2×2421034426665² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 53800765037 = 2421034426665 / (2 + 4 + 2 + 1 + 0 + 3 + 4 + 4 + 2 + 6 + 6 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 2421034426665.

It is not an unprimeable number, because it can be changed into a prime (2421034426669) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 26900382474 + ... + 26900382563.

It is an arithmetic number, because the mean of its divisors is an integer number (349704972747).

Almost surely, 2^{2421034426665} is an apocalyptic number.

It is an amenable number.

2421034426665 is a deficient number, since it is larger than the sum of its proper divisors (1775425246299).

2421034426665 is a wasteful number, since it uses less digits than its factorization.

2421034426665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53800765048 (or 53800765045 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 45.

The spelling of 2421034426665 in words is "two trillion, four hundred twenty-one billion, thirty-four million, four hundred twenty-six thousand, six hundred sixty-five".