686409099529 has 16 divisors (see below), whose sum is σ = 703813524480. Its totient is φ = 669228336000.

The previous prime is 686409099461. The next prime is 686409099581. The reversal of 686409099529 is 925990904686.

686409099529 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 686409099529 - 2¹⁹ = 686408575241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (686409090529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3169102 + ... + 3378760.

It is an arithmetic number, because the mean of its divisors is an integer number (43988345280).

Almost surely, 2^686409099529 is an apocalyptic number.

It is an amenable number.

686409099529 is a deficient number, since it is larger than the sum of its proper divisors (17404424951).

686409099529 is a wasteful number, since it uses less digits than its factorization.

686409099529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210192.

The product of its (nonzero) digits is 75582720, while the sum is 67.

The spelling of 686409099529 in words is "six hundred eighty-six billion, four hundred nine million, ninety-nine thousand, five hundred twenty-nine".