861536505282 has 16 divisors (see below), whose sum is σ = 1723741158240. Its totient is φ = 287067477152.

The previous prime is 861536505241. The next prime is 861536505289. The reversal of 861536505282 is 282505635168.

It is a happy number.

861536505282 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×861536505282² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (861536505289) 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, 27822723 + ... + 27853670.

It is an arithmetic number, because the mean of its divisors is an integer number (107733822390).

Almost surely, 2^861536505282 is an apocalyptic number.

861536505282 is an abundant number, since it is smaller than the sum of its proper divisors (862204652958).

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

861536505282 is a wasteful number, since it uses less digits than its factorization.

861536505282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55678977.

The product of its (nonzero) digits is 3456000, while the sum is 51.

The spelling of 861536505282 in words is "eight hundred sixty-one billion, five hundred thirty-six million, five hundred five thousand, two hundred eighty-two".