688125055555 has 16 divisors (see below), whose sum is σ = 944442037440. Its totient is φ = 471493343232.

The previous prime is 688125055529. The next prime is 688125055559. The reversal of 688125055555 is 555550521886.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 688125055555 - 2¹⁵ = 688125022787 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 688125055496 and 688125055505.

It is not an unprimeable number, because it can be changed into a prime (688125055559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7533910 + ... + 7624699.

It is an arithmetic number, because the mean of its divisors is an integer number (59027627340).

Almost surely, 2^688125055555 is an apocalyptic number.

688125055555 is a deficient number, since it is larger than the sum of its proper divisors (256316981885).

688125055555 is a wasteful number, since it uses less digits than its factorization.

688125055555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15159918.

The product of its (nonzero) digits is 12000000, while the sum is 55.

The spelling of 688125055555 in words is "six hundred eighty-eight billion, one hundred twenty-five million, fifty-five thousand, five hundred fifty-five".