663205231412 has 24 divisors (see below), whose sum is σ = 1228948636104. Its totient is φ = 312079219712.

The previous prime is 663205231331. The next prime is 663205231441. The reversal of 663205231412 is 214132502366.

663205231412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 149053133476 + 514152097936 = 386074^2 + 717044^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1004018 + ... + 1527894.

It is an arithmetic number, because the mean of its divisors is an integer number (51206193171).

Almost surely, 2^663205231412 is an apocalyptic number.

It is an amenable number.

663205231412 is a deficient number, since it is larger than the sum of its proper divisors (565743404692).

663205231412 is a wasteful number, since it uses less digits than its factorization.

663205231412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542515 (or 542513 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

Adding to 663205231412 its reverse (214132502366), we get a palindrome (877337733778).

The spelling of 663205231412 in words is "six hundred sixty-three billion, two hundred five million, two hundred thirty-one thousand, four hundred twelve".