864825543123 has 8 divisors (see below), whose sum is σ = 1153205719488. Its totient is φ = 576497864424.

The previous prime is 864825543121. The next prime is 864825543139. The reversal of 864825543123 is 321345528468.

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

It is not a de Polignac number, because 864825543123 - 2¹ = 864825543121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (864825543121) 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, 13085961 + ... + 13151882.

It is an arithmetic number, because the mean of its divisors is an integer number (144150714936).

Almost surely, 2^864825543123 is an apocalyptic number.

864825543123 is a deficient number, since it is larger than the sum of its proper divisors (288380176365).

864825543123 is a wasteful number, since it uses less digits than its factorization.

864825543123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26248833.

The product of its digits is 5529600, while the sum is 51.

The spelling of 864825543123 in words is "eight hundred sixty-four billion, eight hundred twenty-five million, five hundred forty-three thousand, one hundred twenty-three".