857611694667 has 48 divisors (see below), whose sum is σ = 1434156917760. Its totient is φ = 451841560128.

The previous prime is 857611694659. The next prime is 857611694677. The reversal of 857611694667 is 766496116758.

It is not a de Polignac number, because 857611694667 - 2³ = 857611694659 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 857611694598 and 857611694607.

It is not an unprimeable number, because it can be changed into a prime (857611694617) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 1389184 + ... + 1909202.

It is an arithmetic number, because the mean of its divisors is an integer number (29878269120).

Almost surely, 2^857611694667 is an apocalyptic number.

857611694667 is a deficient number, since it is larger than the sum of its proper divisors (576545223093).

857611694667 is a wasteful number, since it uses less digits than its factorization.

857611694667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520912 (or 520905 counting only the distinct ones).

The product of its digits is 91445760, while the sum is 66.

The spelling of 857611694667 in words is "eight hundred fifty-seven billion, six hundred eleven million, six hundred ninety-four thousand, six hundred sixty-seven".