102856522568 has 36 divisors (see below), whose sum is σ = 194414473995. Its totient is φ = 51015978880.

The previous prime is 102856522547. The next prime is 102856522669. The reversal of 102856522568 is 865225658201.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 5 ways, for example, as 14491825924 + 88364696644 = 120382^2 + 297262^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=226778.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 135159308 + ... + 135160068.

Almost surely, 2^102856522568 is an apocalyptic number.

It is an amenable number.

102856522568 is a deficient number, since it is larger than the sum of its proper divisors (91557951427).

102856522568 is an frugal number, since it uses more digits than its factorization.

102856522568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1826 (or 912 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 50.

Multiplying 102856522568 by its sum of digits (50), we get a square (5142826128400 = 2267780²).

The spelling of 102856522568 in words is "one hundred two billion, eight hundred fifty-six million, five hundred twenty-two thousand, five hundred sixty-eight".