45165638909 has 4 divisors (see below), whose sum is σ = 46267239900. Its totient is φ = 44064037920.

The previous prime is 45165638899. The next prime is 45165638993. The reversal of 45165638909 is 90983656154.

45165638909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3599400025 + 41566238884 = 59995^2 + 203878^2 .

It is a cyclic number.

It is not a de Polignac number, because 45165638909 - 2¹⁶ = 45165573373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45165638509) 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, 550800434 + ... + 550800515.

It is an arithmetic number, because the mean of its divisors is an integer number (11566809975).

Almost surely, 2^45165638909 is an apocalyptic number.

It is an amenable number.

45165638909 is a deficient number, since it is larger than the sum of its proper divisors (1101600991).

45165638909 is a wasteful number, since it uses less digits than its factorization.

45165638909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101600990.

The product of its (nonzero) digits is 6998400, while the sum is 56.

The spelling of 45165638909 in words is "forty-five billion, one hundred sixty-five million, six hundred thirty-eight thousand, nine hundred nine".