80505605103 has 32 divisors (see below), whose sum is σ = 133989250560. Its totient is φ = 41770546560.

The previous prime is 80505605069. The next prime is 80505605111. The reversal of 80505605103 is 30150650508.

It is not a de Polignac number, because 80505605103 - 2⁹ = 80505604591 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80505605113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18700 + ... + 401697.

It is an arithmetic number, because the mean of its divisors is an integer number (4187164080).

Almost surely, 2^80505605103 is an apocalyptic number.

80505605103 is a deficient number, since it is larger than the sum of its proper divisors (53483645457).

80505605103 is a wasteful number, since it uses less digits than its factorization.

80505605103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421247.

The product of its (nonzero) digits is 18000, while the sum is 33.

The spelling of 80505605103 in words is "eighty billion, five hundred five million, six hundred five thousand, one hundred three".