45309819109 has 6 divisors (see below), whose sum is σ = 48131884274. Its totient is φ = 42644535360.

The previous prime is 45309819073. The next prime is 45309819131. The reversal of 45309819109 is 90191890354.

It can be written as a sum of positive squares in 3 ways, for example, as 25111156225 + 20198662884 = 158465^2 + 142122^2 .

It is not a de Polignac number, because 45309819109 - 2²³ = 45301430501 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 (45309819169) 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 5 ways as a sum of consecutive naturals, for example, 78390402 + ... + 78390979.

Almost surely, 2^45309819109 is an apocalyptic number.

It is an amenable number.

45309819109 is a deficient number, since it is larger than the sum of its proper divisors (2822065165).

45309819109 is a wasteful number, since it uses less digits than its factorization.

45309819109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156781415 (or 156781398 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 49.

The spelling of 45309819109 in words is "forty-five billion, three hundred nine million, eight hundred nineteen thousand, one hundred nine".