655752323072 has 224 divisors, whose sum is σ = 1638459373824. Its totient is φ = 254951424000.

The previous prime is 655752323069. The next prime is 655752323077. The reversal of 655752323072 is 270323257556.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (224).

It is a super-2 number, since 2×655752323072² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655752323077) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 442178843 + ... + 442180325.

It is an arithmetic number, because the mean of its divisors is an integer number (7314550776).

Almost surely, 2^655752323072 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 655752323072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (819229686912).

655752323072 is an abundant number, since it is smaller than the sum of its proper divisors (982707050752).

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

655752323072 is a wasteful number, since it uses less digits than its factorization.

655752323072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2228 (or 2204 counting only the distinct ones).

The product of its (nonzero) digits is 2646000, while the sum is 47.

The spelling of 655752323072 in words is "six hundred fifty-five billion, seven hundred fifty-two million, three hundred twenty-three thousand, seventy-two".