861127530804 has 30 divisors (see below), whose sum is σ = 2251157465634. Its totient is φ = 287042510160.

The previous prime is 861127530797. The next prime is 861127530871. The reversal of 861127530804 is 408035721168.

861127530804 is a `hidden beast` number, since 8 + 6 + 11 + 27 + 530 + 80 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 629718428304 + 231409102500 = 793548^2 + 481050^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 861127530804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1328900187 + ... + 1328900834.

Almost surely, 2^861127530804 is an apocalyptic number.

It is an amenable number.

861127530804 is an abundant number, since it is smaller than the sum of its proper divisors (1390029934830).

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

861127530804 is a wasteful number, since it uses less digits than its factorization.

861127530804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2657801037 (or 2657801026 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

It can be divided in two parts, 861127 and 530804, that added together give a palindrome (1391931).

The spelling of 861127530804 in words is "eight hundred sixty-one billion, one hundred twenty-seven million, five hundred thirty thousand, eight hundred four".