45144902449 has 4 divisors (see below), whose sum is σ = 47800484964. Its totient is φ = 42489319936.

The previous prime is 45144902437. The next prime is 45144902459. The reversal of 45144902449 is 94420944154.

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 18246606400 + 26898296049 = 135080^2 + 164007^2 .

It is a cyclic number.

It is not a de Polignac number, because 45144902449 - 2⁷ = 45144902321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45144902399 and 45144902408.

It is not an unprimeable number, because it can be changed into a prime (45144902459) 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, 1327791232 + ... + 1327791265.

It is an arithmetic number, because the mean of its divisors is an integer number (11950121241).

Almost surely, 2^45144902449 is an apocalyptic number.

It is an amenable number.

45144902449 is a deficient number, since it is larger than the sum of its proper divisors (2655582515).

45144902449 is a wasteful number, since it uses less digits than its factorization.

45144902449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2655582514.

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 45144902449 in words is "forty-five billion, one hundred forty-four million, nine hundred two thousand, four hundred forty-nine".