102805816403 has 4 divisors (see below), whose sum is σ = 103556223960. Its totient is φ = 102055408848.

The previous prime is 102805816387. The next prime is 102805816409. The reversal of 102805816403 is 304618508201.

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

It is a cyclic number.

It is not a de Polignac number, because 102805816403 - 2⁴ = 102805816387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102805816409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 375203573 + ... + 375203846.

It is an arithmetic number, because the mean of its divisors is an integer number (25889055990).

Almost surely, 2^102805816403 is an apocalyptic number.

102805816403 is a deficient number, since it is larger than the sum of its proper divisors (750407557).

102805816403 is an equidigital number, since it uses as much as digits as its factorization.

102805816403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750407556.

The product of its (nonzero) digits is 46080, while the sum is 38.

The spelling of 102805816403 in words is "one hundred two billion, eight hundred five million, eight hundred sixteen thousand, four hundred three".