864532861834 has 8 divisors (see below), whose sum is σ = 1297274493060. Its totient is φ = 432108030816.

The previous prime is 864532861799. The next prime is 864532861853. The reversal of 864532861834 is 438168235468.

It can be written as a sum of positive squares in 2 ways, for example, as 864522461209 + 10400625 = 929797^2 + 3225^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×864532861834² (a number of 25 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 79193229 + ... + 79204144.

Almost surely, 2^864532861834 is an apocalyptic number.

864532861834 is a deficient number, since it is larger than the sum of its proper divisors (432741631226).

864532861834 is a wasteful number, since it uses less digits than its factorization.

864532861834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158400104.

The product of its digits is 26542080, while the sum is 58.

The spelling of 864532861834 in words is "eight hundred sixty-four billion, five hundred thirty-two million, eight hundred sixty-one thousand, eight hundred thirty-four".