654120055644 has 144 divisors (see below), whose sum is σ = 1770835965696. Its totient is φ = 186336972800.

The previous prime is 654120055639. The next prime is 654120055657. The reversal of 654120055644 is 446550021456.

It is a junction number, because it is equal to n+sod(n) for n = 654120055596 and 654120055605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33598657 + ... + 33618119.

It is an arithmetic number, because the mean of its divisors is an integer number (12297471984).

Almost surely, 2^654120055644 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 654120055644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (885417982848).

654120055644 is an abundant number, since it is smaller than the sum of its proper divisors (1116715910052).

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

654120055644 is a wasteful number, since it uses less digits than its factorization.

654120055644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20396 (or 20377 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 42.

The spelling of 654120055644 in words is "six hundred fifty-four billion, one hundred twenty million, fifty-five thousand, six hundred forty-four".