654043005520 has 160 divisors (see below), whose sum is σ = 1609044871680. Its totient is φ = 246557053440.

The previous prime is 654043005503. The next prime is 654043005521. The reversal of 654043005520 is 25500340456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654043005521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 275849935 + ... + 275852305.

It is an arithmetic number, because the mean of its divisors is an integer number (10056530448).

Almost surely, 2^654043005520 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 654043005520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (804522435840).

654043005520 is an abundant number, since it is smaller than the sum of its proper divisors (955001866160).

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

654043005520 is a wasteful number, since it uses less digits than its factorization.

654043005520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3273 (or 3267 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 34.

Adding to 654043005520 its reverse (25500340456), we get a palindrome (679543345976).

The spelling of 654043005520 in words is "six hundred fifty-four billion, forty-three million, five thousand, five hundred twenty".