688636047132252 has 24 divisors (see below), whose sum is σ = 1785352714787600. Its totient is φ = 229545349044048.

The previous prime is 688636047132233. The next prime is 688636047132259. The reversal of 688636047132252 is 252231740636886.

688636047132252 is a `hidden beast` number, since 6 + 8 + 8 + 6 + 3 + 604 + 7 + 13 + 2 + 2 + 5 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 688636047132252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688636047132259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3188129847727 + ... + 3188129847942.

Almost surely, 2^{688636047132252} is an apocalyptic number.

It is an amenable number.

688636047132252 is an abundant number, since it is smaller than the sum of its proper divisors (1096716667655348).

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

688636047132252 is a wasteful number, since it uses less digits than its factorization.

688636047132252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6376259695682 (or 6376259695674 counting only the distinct ones).

The product of its (nonzero) digits is 139345920, while the sum is 63.

The spelling of 688636047132252 in words is "six hundred eighty-eight trillion, six hundred thirty-six billion, forty-seven million, one hundred thirty-two thousand, two hundred fifty-two".