688836234145 has 16 divisors (see below), whose sum is σ = 829451766528. Its totient is φ = 549170807040.

The previous prime is 688836234113. The next prime is 688836234157. The reversal of 688836234145 is 541432638886.

It is not a de Polignac number, because 688836234145 - 2⁵ = 688836234113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 688836234145.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8727097 + ... + 8805673.

It is an arithmetic number, because the mean of its divisors is an integer number (51840735408).

Almost surely, 2^688836234145 is an apocalyptic number.

It is an amenable number.

688836234145 is a deficient number, since it is larger than the sum of its proper divisors (140615532383).

688836234145 is a wasteful number, since it uses less digits than its factorization.

688836234145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84600.

The product of its digits is 26542080, while the sum is 58.

The spelling of 688836234145 in words is "six hundred eighty-eight billion, eight hundred thirty-six million, two hundred thirty-four thousand, one hundred forty-five".