40441001644800 has 648 divisors, whose sum is σ = 146091927893184. Its totient is φ = 10672139427840.

The previous prime is 40441001644783. The next prime is 40441001644811. The reversal of 40441001644800 is 844610014404.

40441001644800 is a `hidden beast` number, since 4 + 0 + 4 + 4 + 1 + 0 + 0 + 1 + 644 + 8 + 0 + 0 = 666.

It is a super-2 number, since 2×40441001644800² (a number of 28 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 6921270679 + ... + 6921276521.

It is an arithmetic number, because the mean of its divisors is an integer number (225450506008).

Almost surely, 2^{40441001644800} is an apocalyptic number.

40441001644800 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 40441001644800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73045963946592).

40441001644800 is an abundant number, since it is smaller than the sum of its proper divisors (105650926248384).

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

40441001644800 is a wasteful number, since it uses less digits than its factorization.

40441001644800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7105 (or 7083 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 36.

The spelling of 40441001644800 in words is "forty trillion, four hundred forty-one billion, one million, six hundred forty-four thousand, eight hundred".