861763651180 has 12 divisors (see below), whose sum is σ = 1809703667520. Its totient is φ = 344705460464.

The previous prime is 861763651127. The next prime is 861763651183. The reversal of 861763651180 is 81156367168.

It is not an unprimeable number, because it can be changed into a prime (861763651183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21544091260 + ... + 21544091299.

It is an arithmetic number, because the mean of its divisors is an integer number (150808638960).

Almost surely, 2^861763651180 is an apocalyptic number.

It is an amenable number.

861763651180 is an abundant number, since it is smaller than the sum of its proper divisors (947940016340).

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

861763651180 is a wasteful number, since it uses less digits than its factorization.

861763651180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43088182568 (or 43088182566 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 52.

The spelling of 861763651180 in words is "eight hundred sixty-one billion, seven hundred sixty-three million, six hundred fifty-one thousand, one hundred eighty".