861527332676 has 24 divisors (see below), whose sum is σ = 1536265130904. Its totient is φ = 422595979520.

The previous prime is 861527332651. The next prime is 861527332727. The reversal of 861527332676 is 676233725168.

It can be written as a sum of positive squares in 4 ways, for example, as 236415723076 + 625111609600 = 486226^2 + 790640^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2113616 + ... + 2488056.

It is an arithmetic number, because the mean of its divisors is an integer number (64011047121).

Almost surely, 2^861527332676 is an apocalyptic number.

It is an amenable number.

861527332676 is a deficient number, since it is larger than the sum of its proper divisors (674737798228).

861527332676 is a wasteful number, since it uses less digits than its factorization.

861527332676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385351 (or 385349 counting only the distinct ones).

The product of its digits is 15240960, while the sum is 56.

The spelling of 861527332676 in words is "eight hundred sixty-one billion, five hundred twenty-seven million, three hundred thirty-two thousand, six hundred seventy-six".