655405564000 has 192 divisors, whose sum is σ = 1774130589504. Its totient is φ = 235968000000.

The previous prime is 655405563991. The next prime is 655405564013. The reversal of 655405564000 is 465504556.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4370260 + ... + 4517740.

It is an arithmetic number, because the mean of its divisors is an integer number (9240263487).

Almost surely, 2^655405564000 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 655405564000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (887065294752).

655405564000 is an abundant number, since it is smaller than the sum of its proper divisors (1118725025504).

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

655405564000 is a wasteful number, since it uses less digits than its factorization.

655405564000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147618 (or 147600 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 40.

It can be divided in two parts, 65540556 and 4000, that added together give a palindrome (65544556).

The spelling of 655405564000 in words is "six hundred fifty-five billion, four hundred five million, five hundred sixty-four thousand".