655666125132 has 96 divisors (see below), whose sum is σ = 1705643412480. Its totient is φ = 194815134720.

The previous prime is 655666125109. The next prime is 655666125139. The reversal of 655666125132 is 231521666556.

It is a super-2 number, since 2×655666125132² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (655666125139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14073757 + ... + 14120267.

It is an arithmetic number, because the mean of its divisors is an integer number (17767118880).

Almost surely, 2^655666125132 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 655666125132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (852821706240).

655666125132 is an abundant number, since it is smaller than the sum of its proper divisors (1049977287348).

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

655666125132 is a wasteful number, since it uses less digits than its factorization.

655666125132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50191 (or 50189 counting only the distinct ones).

The product of its digits is 1944000, while the sum is 48.

The spelling of 655666125132 in words is "six hundred fifty-five billion, six hundred sixty-six million, one hundred twenty-five thousand, one hundred thirty-two".