45131032240 has 80 divisors (see below), whose sum is σ = 120448219392. Its totient is φ = 15405288192.

The previous prime is 45131032223. The next prime is 45131032267. The reversal of 45131032240 is 4223013154.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50394 + ... + 304633.

Almost surely, 2^45131032240 is an apocalyptic number.

45131032240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45131032240 is an abundant number, since it is smaller than the sum of its proper divisors (75317187152).

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

45131032240 is a wasteful number, since it uses less digits than its factorization.

45131032240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355274 (or 355268 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 45131032240 its reverse (4223013154), we get a palindrome (49354045394).

The spelling of 45131032240 in words is "forty-five billion, one hundred thirty-one million, thirty-two thousand, two hundred forty".