685909622963130 has 64 divisors (see below), whose sum is σ = 1646631208857600. Its totient is φ = 182859449016384.

The previous prime is 685909622963069. The next prime is 685909622963287. The reversal of 685909622963130 is 31369226909586.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1715745327 + ... + 1716145053.

It is an arithmetic number, because the mean of its divisors is an integer number (25728612638400).

Almost surely, 2^{685909622963130} is an apocalyptic number.

685909622963130 is an abundant number, since it is smaller than the sum of its proper divisors (960721585894470).

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

685909622963130 is a wasteful number, since it uses less digits than its factorization.

685909622963130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415163.

The product of its (nonzero) digits is 226748160, while the sum is 69.

The spelling of 685909622963130 in words is "six hundred eighty-five trillion, nine hundred nine billion, six hundred twenty-two million, nine hundred sixty-three thousand, one hundred thirty".