656266532000000 has 504 divisors, whose sum is σ = 1647462394086432. Its totient is φ = 260905881600000.

The previous prime is 656266531999993. The next prime is 656266532000039. The reversal of 656266532000000 is 235662656.

It is a super-2 number, since 2×656266532000000² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 671715999512 + ... + 671716000488.

Almost surely, 2^{656266532000000} 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 656266532000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (823731197043216).

656266532000000 is an abundant number, since it is smaller than the sum of its proper divisors (991195862086432).

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

656266532000000 is an frugal number, since it uses more digits than its factorization.

656266532000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1877 (or 1838 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 41.

Adding to 656266532000000 its reverse (235662656), we get a palindrome (656266767662656).

The spelling of 656266532000000 in words is "six hundred fifty-six trillion, two hundred sixty-six billion, five hundred thirty-two million", and thus it is an aban number.