45545442240 has 224 divisors, whose sum is σ = 147190602240. Its totient is φ = 11929522176.

The previous prime is 45545442227. The next prime is 45545442269. The reversal of 45545442240 is 4224454554.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28235674 + ... + 28237286.

Almost surely, 2^45545442240 is an apocalyptic number.

45545442240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45545442240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73595301120).

45545442240 is an abundant number, since it is smaller than the sum of its proper divisors (101645160000).

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

45545442240 is a wasteful number, since it uses less digits than its factorization.

45545442240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2139 (or 2129 counting only the distinct ones).

The product of its (nonzero) digits is 512000, while the sum is 39.

Adding to 45545442240 its reverse (4224454554), we get a palindrome (49769896794).

The spelling of 45545442240 in words is "forty-five billion, five hundred forty-five million, four hundred forty-two thousand, two hundred forty".