4003036644420 has 384 divisors, whose sum is σ = 14404061952000. Its totient is φ = 912740037120.

The previous prime is 4003036644337. The next prime is 4003036644427. The reversal of 4003036644420 is 244466303004.

4003036644420 is a `hidden beast` number, since 4 + 0 + 0 + 3 + 0 + 3 + 6 + 644 + 4 + 2 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (4003036644427) 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 127 ways as a sum of consecutive naturals, for example, 15559954 + ... + 15815126.

It is an arithmetic number, because the mean of its divisors is an integer number (37510578000).

Almost surely, 2^{4003036644420} 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 4003036644420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7202030976000).

4003036644420 is an abundant number, since it is smaller than the sum of its proper divisors (10401025307580).

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

4003036644420 is a wasteful number, since it uses less digits than its factorization.

4003036644420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255360 (or 255352 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 36.

The spelling of 4003036644420 in words is "four trillion, three billion, thirty-six million, six hundred forty-four thousand, four hundred twenty".