4055644155420 has 1728 divisors, whose sum is σ = 16256491130880. Its totient is φ = 805419417600.

The previous prime is 4055644155401. The next prime is 4055644155443. The reversal of 4055644155420 is 245514465504.

4055644155420 is a `hidden beast` number, since 4 + 0 + 5 + 5 + 64 + 41 + 5 + 542 + 0 = 666.

4055644155420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 575 ways as a sum of consecutive naturals, for example, 9916000176 + ... + 9916000584.

Almost surely, 2^{4055644155420} 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 4055644155420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8128245565440).

4055644155420 is an abundant number, since it is smaller than the sum of its proper divisors (12200846975460).

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

4055644155420 is a wasteful number, since it uses less digits than its factorization.

4055644155420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556 (or 534 counting only the distinct ones).

The product of its (nonzero) digits is 1920000, while the sum is 45.

The spelling of 4055644155420 in words is "four trillion, fifty-five billion, six hundred forty-four million, one hundred fifty-five thousand, four hundred twenty".