44081495640 has 480 divisors, whose sum is σ = 180034611120. Its totient is φ = 9298340352.

The previous prime is 44081495621. The next prime is 44081495659. The reversal of 44081495640 is 4659418044.

44081495640 is a `hidden beast` number, since 4 + 4 + 0 + 81 + 4 + 9 + 564 + 0 = 666.

44081495640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (44081495621) and next prime (44081495659).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 11234719 + ... + 11238641.

Almost surely, 2^44081495640 is an apocalyptic number.

44081495640 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 44081495640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90017305560).

44081495640 is an abundant number, since it is smaller than the sum of its proper divisors (135953115480).

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

44081495640 is a wasteful number, since it uses less digits than its factorization.

44081495640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3981 (or 3953 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 44081495640 in words is "forty-four billion, eighty-one million, four hundred ninety-five thousand, six hundred forty".