655363768320 has 1024 divisors, whose sum is σ = 2476279296000. Its totient is φ = 166259589120.

The previous prime is 655363768237. The next prime is 655363768321. The reversal of 655363768320 is 23867363556.

It is a happy number.

655363768320 is a `hidden beast` number, since 6 + 5 + 536 + 3 + 7 + 6 + 83 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (1024).

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 (655363768321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11107860451 + ... + 11107860509.

It is an arithmetic number, because the mean of its divisors is an integer number (2418241500).

Almost surely, 2^655363768320 is an apocalyptic number.

655363768320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 655363768320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1238139648000).

655363768320 is an abundant number, since it is smaller than the sum of its proper divisors (1820915527680).

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

655363768320 is an frugal number, since it uses more digits than its factorization.

655363768320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 16329600, while the sum is 54.

The spelling of 655363768320 in words is "six hundred fifty-five billion, three hundred sixty-three million, seven hundred sixty-eight thousand, three hundred twenty".