659431343412 has 72 divisors (see below), whose sum is σ = 1695513980160. Its totient is φ = 216042131520.

The previous prime is 659431343401. The next prime is 659431343413. The reversal of 659431343412 is 214343134956.

659431343412 is a `hidden beast` number, since 6 + 594 + 3 + 1 + 3 + 43 + 4 + 12 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (659431343413) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2782693 + ... + 3010355.

It is an arithmetic number, because the mean of its divisors is an integer number (23548805280).

Almost surely, 2^659431343412 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 659431343412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (847756990080).

659431343412 is an abundant number, since it is smaller than the sum of its proper divisors (1036082636748).

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

659431343412 is a wasteful number, since it uses less digits than its factorization.

659431343412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229053 (or 229048 counting only the distinct ones).

The product of its digits is 933120, while the sum is 45.

The spelling of 659431343412 in words is "six hundred fifty-nine billion, four hundred thirty-one million, three hundred forty-three thousand, four hundred twelve".