45442454140 has 48 divisors (see below), whose sum is σ = 98003634624. Its totient is φ = 17688844800.

The previous prime is 45442454117. The next prime is 45442454143. The reversal of 45442454140 is 4145424454.

It is a self number, because there is not a number n which added to its sum of digits gives 45442454140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45442454143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255745 + ... + 395335.

It is an arithmetic number, because the mean of its divisors is an integer number (2041742388).

Almost surely, 2^45442454140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45442454140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49001817312).

45442454140 is an abundant number, since it is smaller than the sum of its proper divisors (52561180484).

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

45442454140 is a wasteful number, since it uses less digits than its factorization.

45442454140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140038 (or 140036 counting only the distinct ones).

The product of its (nonzero) digits is 204800, while the sum is 37.

Adding to 45442454140 its reverse (4145424454), we get a palindrome (49587878594).

The spelling of 45442454140 in words is "forty-five billion, four hundred forty-two million, four hundred fifty-four thousand, one hundred forty".