861478675846 has 16 divisors (see below), whose sum is σ = 1361003295744. Its totient is φ = 408160963144.

The previous prime is 861478675801. The next prime is 861478675847. The reversal of 861478675846 is 648576874168.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861478675847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87508150 + ... + 87517993.

It is an arithmetic number, because the mean of its divisors is an integer number (85062705984).

Almost surely, 2^861478675846 is an apocalyptic number.

861478675846 is a deficient number, since it is larger than the sum of its proper divisors (499524619898).

861478675846 is a wasteful number, since it uses less digits than its factorization.

861478675846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175026275.

The product of its digits is 433520640, while the sum is 70.

The spelling of 861478675846 in words is "eight hundred sixty-one billion, four hundred seventy-eight million, six hundred seventy-five thousand, eight hundred forty-six".