655334281728 has 560 divisors, whose sum is σ = 2304618655680. Its totient is φ = 182150995968.

The previous prime is 655334281727. The next prime is 655334281747. The reversal of 655334281728 is 827182433556.

655334281728 is a `hidden beast` number, since 6 + 5 + 5 + 334 + 281 + 7 + 28 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (655334281727) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 96667843 + ... + 96674621.

Almost surely, 2^655334281728 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 655334281728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1152309327840).

655334281728 is an abundant number, since it is smaller than the sum of its proper divisors (1649284373952).

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

655334281728 is an frugal number, since it uses more digits than its factorization.

655334281728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6859 (or 6828 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 54.

The spelling of 655334281728 in words is "six hundred fifty-five billion, three hundred thirty-four million, two hundred eighty-one thousand, seven hundred twenty-eight".