655711232320 has 112 divisors (see below), whose sum is σ = 1653964159680. Its totient is φ = 246750879744.

The previous prime is 655711232317. The next prime is 655711232339. The reversal of 655711232320 is 23232117556.

It is a happy number.

It is a super-3 number, since 3×655711232320³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 655711232320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13396051 + ... + 13444909.

It is an arithmetic number, because the mean of its divisors is an integer number (14767537140).

Almost surely, 2^655711232320 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 655711232320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (826982079840).

655711232320 is an abundant number, since it is smaller than the sum of its proper divisors (998252927360).

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

655711232320 is a wasteful number, since it uses less digits than its factorization.

655711232320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51360 (or 51350 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 37.

Adding to 655711232320 its reverse (23232117556), we get a palindrome (678943349876).

The spelling of 655711232320 in words is "six hundred fifty-five billion, seven hundred eleven million, two hundred thirty-two thousand, three hundred twenty".