659252663712 has 144 divisors (see below), whose sum is σ = 1925168394240. Its totient is φ = 213906341376.

The previous prime is 659252663689. The next prime is 659252663749. The reversal of 659252663712 is 217366252956.

It is a happy number.

659252663712 is a `hidden beast` number, since 6 + 5 + 9 + 2 + 5 + 266 + 371 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×659252663712² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1768489 + ... + 2108567.

It is an arithmetic number, because the mean of its divisors is an integer number (13369224960).

Almost surely, 2^659252663712 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 659252663712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (962584197120).

659252663712 is an abundant number, since it is smaller than the sum of its proper divisors (1265915730528).

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

659252663712 is a wasteful number, since it uses less digits than its factorization.

659252663712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340275 (or 340264 counting only the distinct ones).

The product of its digits is 8164800, while the sum is 54.

The spelling of 659252663712 in words is "six hundred fifty-nine billion, two hundred fifty-two million, six hundred sixty-three thousand, seven hundred twelve".