655281207672 has 128 divisors (see below), whose sum is σ = 2016842150400. Its totient is φ = 172770651648.

The previous prime is 655281207671. The next prime is 655281207683. The reversal of 655281207672 is 276702182556.

655281207672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×655281207672² (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 (655281207671) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7704354 + ... + 7788942.

It is an arithmetic number, because the mean of its divisors is an integer number (15756579300).

Almost surely, 2^655281207672 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 655281207672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1008421075200).

655281207672 is an abundant number, since it is smaller than the sum of its proper divisors (1361560942728).

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

655281207672 is a wasteful number, since it uses less digits than its factorization.

655281207672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88165 (or 88161 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 51.

The spelling of 655281207672 in words is "six hundred fifty-five billion, two hundred eighty-one million, two hundred seven thousand, six hundred seventy-two".