857647746708 has 12 divisors (see below), whose sum is σ = 2001178075680. Its totient is φ = 285882582232.

The previous prime is 857647746707. The next prime is 857647746763. The reversal of 857647746708 is 807647746758.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857647746707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35735322768 + ... + 35735322791.

It is an arithmetic number, because the mean of its divisors is an integer number (166764839640).

Almost surely, 2^857647746708 is an apocalyptic number.

It is an amenable number.

857647746708 is an abundant number, since it is smaller than the sum of its proper divisors (1143530328972).

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

857647746708 is a wasteful number, since it uses less digits than its factorization.

857647746708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71470645566 (or 71470645564 counting only the distinct ones).

The product of its (nonzero) digits is 442552320, while the sum is 69.

The spelling of 857647746708 in words is "eight hundred fifty-seven billion, six hundred forty-seven million, seven hundred forty-six thousand, seven hundred eight".