1605464300641 has 4 divisors (see below), whose sum is σ = 1605799965952. Its totient is φ = 1605128635332.

The previous prime is 1605464300639. The next prime is 1605464300683. The reversal of 1605464300641 is 1460034645061.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1605464300641 - 2¹ = 1605464300639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1605464300594 and 1605464300603.

It is not an unprimeable number, because it can be changed into a prime (1605464300611) 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 3 ways as a sum of consecutive naturals, for example, 167825481 + ... + 167835046.

It is an arithmetic number, because the mean of its divisors is an integer number (401449991488).

Almost surely, 2^{1605464300641} is an apocalyptic number.

It is an amenable number.

1605464300641 is a deficient number, since it is larger than the sum of its proper divisors (335665311).

1605464300641 is an equidigital number, since it uses as much as digits as its factorization.

1605464300641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335665310.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 1605464300641 in words is "one trillion, six hundred five billion, four hundred sixty-four million, three hundred thousand, six hundred forty-one".