19803205075 has 12 divisors (see below), whose sum is σ = 24922483480. Its totient is φ = 15606106560.

The previous prime is 19803205073. The next prime is 19803205099. The reversal of 19803205075 is 57050230891.

It is not a de Polignac number, because 19803205075 - 2¹ = 19803205073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19803205073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5909730 + ... + 5913079.

Almost surely, 2^19803205075 is an apocalyptic number.

19803205075 is a deficient number, since it is larger than the sum of its proper divisors (5119278405).

19803205075 is a wasteful number, since it uses less digits than its factorization.

19803205075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11822886 (or 11822881 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 40.

The spelling of 19803205075 in words is "nineteen billion, eight hundred three million, two hundred five thousand, seventy-five".