45040205440 has 48 divisors (see below), whose sum is σ = 107687077830. Its totient is φ = 18013934592.

The previous prime is 45040205437. The next prime is 45040205459. The reversal of 45040205440 is 4450204054.

It can be written as a sum of positive squares in 3 ways, for example, as 44920259136 + 119946304 = 211944^2 + 10952^2 .

It is a junction number, because it is equal to n+sod(n) for n = 45040205399 and 45040205408.

It is an unprimeable number.

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, 5364766 + ... + 5373154.

Almost surely, 2^45040205440 is an apocalyptic number.

45040205440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45040205440 is an abundant number, since it is smaller than the sum of its proper divisors (62646872390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45040205440 is an frugal number, since it uses more digits than its factorization.

45040205440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16797 (or 8396 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 28.

Adding to 45040205440 its reverse (4450204054), we get a palindrome (49490409494).

The spelling of 45040205440 in words is "forty-five billion, forty million, two hundred five thousand, four hundred forty".