688377773886 has 16 divisors (see below), whose sum is σ = 1501915143168. Its totient is φ = 208599325400.

The previous prime is 688377773731. The next prime is 688377773903.

688377773886 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5214983070 + ... + 5214983201.

It is an arithmetic number, because the mean of its divisors is an integer number (93869696448).

Almost surely, 2^688377773886 is an apocalyptic number.

688377773886 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

688377773886 is an abundant number, since it is smaller than the sum of its proper divisors (813537369282).

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

688377773886 is a wasteful number, since it uses less digits than its factorization.

688377773886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10429966287.

The product of its digits is 3186376704, while the sum is 78.

The spelling of 688377773886 in words is "six hundred eighty-eight billion, three hundred seventy-seven million, seven hundred seventy-three thousand, eight hundred eighty-six".