655044745824 has 576 divisors, whose sum is σ = 2399645606400. Its totient is φ = 170059309056.

The previous prime is 655044745787. The next prime is 655044745829. The reversal of 655044745824 is 428547440556.

655044745824 is a `hidden beast` number, since 6 + 5 + 50 + 4 + 4 + 7 + 4 + 582 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655044745829) 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 95 ways as a sum of consecutive naturals, for example, 50681827 + ... + 50694749.

It is an arithmetic number, because the mean of its divisors is an integer number (4166051400).

Almost surely, 2^655044745824 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 655044745824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1199822803200).

655044745824 is an abundant number, since it is smaller than the sum of its proper divisors (1744600860576).

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

655044745824 is a wasteful number, since it uses less digits than its factorization.

655044745824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13012 (or 12981 counting only the distinct ones).

The product of its (nonzero) digits is 21504000, while the sum is 54.

The spelling of 655044745824 in words is "six hundred fifty-five billion, forty-four million, seven hundred forty-five thousand, eight hundred twenty-four".