688818888811 has 8 divisors (see below), whose sum is σ = 689318281520. Its totient is φ = 688319620992.

The previous prime is 688818888809. The next prime is 688818888859. The reversal of 688818888811 is 118888818886.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 688818888811 - 2¹ = 688818888809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (688818888871) 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, 12891196 + ... + 12944518.

It is an arithmetic number, because the mean of its divisors is an integer number (86164785190).

Almost surely, 2^688818888811 is an apocalyptic number.

688818888811 is a deficient number, since it is larger than the sum of its proper divisors (499392709).

688818888811 is a wasteful number, since it uses less digits than its factorization.

688818888811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62445.

The product of its digits is 100663296, while the sum is 73.

The spelling of 688818888811 in words is "six hundred eighty-eight billion, eight hundred eighteen million, eight hundred eighty-eight thousand, eight hundred eleven".