309965790445 has 16 divisors (see below), whose sum is σ = 374048233920. Its totient is φ = 246580890624.

The previous prime is 309965790443. The next prime is 309965790451. The reversal of 309965790445 is 544097569903.

It is a cyclic number.

It is not a de Polignac number, because 309965790445 - 2¹ = 309965790443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309965790443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2196426 + ... + 2333284.

It is an arithmetic number, because the mean of its divisors is an integer number (23378014620).

Almost surely, 2^309965790445 is an apocalyptic number.

It is an amenable number.

309965790445 is a deficient number, since it is larger than the sum of its proper divisors (64082443475).

309965790445 is a wasteful number, since it uses less digits than its factorization.

309965790445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139404.

The product of its (nonzero) digits is 36741600, while the sum is 61.

The spelling of 309965790445 in words is "three hundred nine billion, nine hundred sixty-five million, seven hundred ninety thousand, four hundred forty-five".