861532235168 has 48 divisors (see below), whose sum is σ = 1893367387296. Its totient is φ = 382498448640.

The previous prime is 861532235087. The next prime is 861532235189.

861532235168 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28444571 + ... + 28474842.

It is an arithmetic number, because the mean of its divisors is an integer number (39445153902).

Almost surely, 2^861532235168 is an apocalyptic number.

861532235168 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

861532235168 is an abundant number, since it is smaller than the sum of its proper divisors (1031835152128).

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

861532235168 is a wasteful number, since it uses less digits than its factorization.

861532235168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56919477 (or 56919469 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 50.

The spelling of 861532235168 in words is "eight hundred sixty-one billion, five hundred thirty-two million, two hundred thirty-five thousand, one hundred sixty-eight".