44540415612 has 144 divisors (see below), whose sum is σ = 141947769600. Its totient is φ = 11438887680.

The previous prime is 44540415611. The next prime is 44540415643. The reversal of 44540415612 is 21651404544.

44540415612 is a `hidden beast` number, since 4 + 4 + 54 + 0 + 41 + 561 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44540415611) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 156439 + ... + 336977.

It is an arithmetic number, because the mean of its divisors is an integer number (985748400).

Almost surely, 2^44540415612 is an apocalyptic number.

44540415612 is a gapful number since it is divisible by the number (42) 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 44540415612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70973884800).

44540415612 is an abundant number, since it is smaller than the sum of its proper divisors (97407353988).

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

44540415612 is a wasteful number, since it uses less digits than its factorization.

44540415612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180656 (or 180651 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

The spelling of 44540415612 in words is "forty-four billion, five hundred forty million, four hundred fifteen thousand, six hundred twelve".