102102556745 has 16 divisors (see below), whose sum is σ = 140154528000. Its totient is φ = 69949099584.

The previous prime is 102102556739. The next prime is 102102556789. The reversal of 102102556745 is 547655201201.

It is not a de Polignac number, because 102102556745 - 2⁴ = 102102556729 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 102102556699 and 102102556708.

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 15 ways as a sum of consecutive naturals, for example, 1296245 + ... + 1372754.

It is an arithmetic number, because the mean of its divisors is an integer number (8759658000).

Almost surely, 2^102102556745 is an apocalyptic number.

It is an amenable number.

102102556745 is a deficient number, since it is larger than the sum of its proper divisors (38051971255).

102102556745 is a wasteful number, since it uses less digits than its factorization.

102102556745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2670104.

The product of its (nonzero) digits is 84000, while the sum is 38.

Adding to 102102556745 its reverse (547655201201), we get a palindrome (649757757946).

The spelling of 102102556745 in words is "one hundred two billion, one hundred two million, five hundred fifty-six thousand, seven hundred forty-five".