44540469918 has 192 divisors, whose sum is σ = 118165651200. Its totient is φ = 12395436480.

The previous prime is 44540469913. The next prime is 44540469923. The reversal of 44540469918 is 81996404544.

44540469918 is a `hidden beast` number, since 4 + 4 + 540 + 4 + 6 + 9 + 91 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (44540469913) and next prime (44540469923).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44540469913) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 17269153 + ... + 17271731.

It is an arithmetic number, because the mean of its divisors is an integer number (615446100).

Almost surely, 2^44540469918 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44540469918, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59082825600).

44540469918 is an abundant number, since it is smaller than the sum of its proper divisors (73625181282).

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

44540469918 is a wasteful number, since it uses less digits than its factorization.

44540469918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2772 (or 2759 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 44540469918 in words is "forty-four billion, five hundred forty million, four hundred sixty-nine thousand, nine hundred eighteen".