686305519695552 has 112 divisors (see below), whose sum is σ = 1822227738478560. Its totient is φ = 227965169123328.

The previous prime is 686305519695527. The next prime is 686305519695611. The reversal of 686305519695552 is 255596915503686.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 572818974 + ... + 574015842.

It is an arithmetic number, because the mean of its divisors is an integer number (16269890522130).

Almost surely, 2^{686305519695552} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 686305519695552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (911113869239280).

686305519695552 is an abundant number, since it is smaller than the sum of its proper divisors (1135922218783008).

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

686305519695552 is a wasteful number, since it uses less digits than its factorization.

686305519695552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207370 (or 1207360 counting only the distinct ones).

The product of its (nonzero) digits is 2624400000, while the sum is 75.

The spelling of 686305519695552 in words is "six hundred eighty-six trillion, three hundred five billion, five hundred nineteen million, six hundred ninety-five thousand, five hundred fifty-two".