1605465064243 has 4 divisors (see below), whose sum is σ = 1611260967280. Its totient is φ = 1599669161208.

The previous prime is 1605465064241. The next prime is 1605465064279. The reversal of 1605465064243 is 3424605645061.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1605465064243 - 2¹ = 1605465064241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1605465064193 and 1605465064202.

It is not an unprimeable number, because it can be changed into a prime (1605465064241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2897951103 + ... + 2897951656.

It is an arithmetic number, because the mean of its divisors is an integer number (402815241820).

Almost surely, 2^{1605465064243} is an apocalyptic number.

1605465064243 is a deficient number, since it is larger than the sum of its proper divisors (5795903037).

1605465064243 is an equidigital number, since it uses as much as digits as its factorization.

1605465064243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5795903036.

The product of its (nonzero) digits is 2073600, while the sum is 46.

The spelling of 1605465064243 in words is "one trillion, six hundred five billion, four hundred sixty-five million, sixty-four thousand, two hundred forty-three".