909645464605 has 4 divisors (see below), whose sum is σ = 1091574557532. Its totient is φ = 727716371680.

The previous prime is 909645464599. The next prime is 909645464621. The reversal of 909645464605 is 506464546909.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 210848109124 + 698797355481 = 459182^2 + 835941^2 .

It is not a de Polignac number, because 909645464605 - 2⁹ = 909645464093 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 909645464605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90964546456 + ... + 90964546465.

It is an arithmetic number, because the mean of its divisors is an integer number (272893639383).

Almost surely, 2^909645464605 is an apocalyptic number.

It is an amenable number.

909645464605 is a deficient number, since it is larger than the sum of its proper divisors (181929092927).

909645464605 is a wasteful number, since it uses less digits than its factorization.

909645464605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181929092926.

The product of its (nonzero) digits is 27993600, while the sum is 58.

The spelling of 909645464605 in words is "nine hundred nine billion, six hundred forty-five million, four hundred sixty-four thousand, six hundred five".