655539118272 has 168 divisors, whose sum is σ = 1885769875392. Its totient is φ = 217725580800.

The previous prime is 655539118271. The next prime is 655539118291. The reversal of 655539118272 is 272811935556.

655539118272 is a `hidden beast` number, since 6 + 5 + 5 + 5 + 391 + 182 + 72 = 666.

It is not an unprimeable number, because it can be changed into a prime (655539118271) 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 23 ways as a sum of consecutive naturals, for example, 217713247 + ... + 217716257.

Almost surely, 2^655539118272 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 655539118272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (942884937696).

655539118272 is an abundant number, since it is smaller than the sum of its proper divisors (1230230757120).

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

655539118272 is a wasteful number, since it uses less digits than its factorization.

655539118272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4267 (or 4254 counting only the distinct ones).

The product of its digits is 4536000, while the sum is 54.

The spelling of 655539118272 in words is "six hundred fifty-five billion, five hundred thirty-nine million, one hundred eighteen thousand, two hundred seventy-two".