102896439785 has 4 divisors (see below), whose sum is σ = 123475727748. Its totient is φ = 82317151824.

The previous prime is 102896439761. The next prime is 102896439803. The reversal of 102896439785 is 587934698201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40794304576 + 62102135209 = 201976^2 + 249203^2 .

It is a cyclic number.

It is not a de Polignac number, because 102896439785 - 2¹² = 102896435689 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10289643974 + ... + 10289643983.

It is an arithmetic number, because the mean of its divisors is an integer number (30868931937).

It is a 1-persistent number, because it is pandigital, but 2⋅102896439785 = 205792879570 is not.

Almost surely, 2^102896439785 is an apocalyptic number.

It is an amenable number.

102896439785 is a deficient number, since it is larger than the sum of its proper divisors (20579287963).

102896439785 is an equidigital number, since it uses as much as digits as its factorization.

102896439785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20579287962.

The product of its (nonzero) digits is 26127360, while the sum is 62.

The spelling of 102896439785 in words is "one hundred two billion, eight hundred ninety-six million, four hundred thirty-nine thousand, seven hundred eighty-five".