688193807512 has 16 divisors (see below), whose sum is σ = 1291779828000. Its totient is φ = 343719186720.

The previous prime is 688193807507. The next prime is 688193807563. The reversal of 688193807512 is 215708391886.

It is a super-2 number, since 2×688193807512² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47206887 + ... + 47221462.

It is an arithmetic number, because the mean of its divisors is an integer number (80736239250).

Almost surely, 2^688193807512 is an apocalyptic number.

It is an amenable number.

688193807512 is a deficient number, since it is larger than the sum of its proper divisors (603586020488).

688193807512 is a wasteful number, since it uses less digits than its factorization.

688193807512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94429266 (or 94429262 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 58.

The spelling of 688193807512 in words is "six hundred eighty-eight billion, one hundred ninety-three million, eight hundred seven thousand, five hundred twelve".