99505000405 has 4 divisors (see below), whose sum is σ = 119406000492. Its totient is φ = 79604000320.

The previous prime is 99505000391. The next prime is 99505000433. The reversal of 99505000405 is 50400050599.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50400050599 = 81013 ⋅622123.

It can be written as a sum of positive squares in 2 ways, for example, as 23228503281 + 76276497124 = 152409^2 + 276182^2 .

It is not a de Polignac number, because 99505000405 - 2¹⁹ = 99504476117 is a prime.

It is a Duffinian number.

It is a congruent 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, 9950500036 + ... + 9950500045.

It is an arithmetic number, because the mean of its divisors is an integer number (29851500123).

Almost surely, 2^99505000405 is an apocalyptic number.

It is an amenable number.

99505000405 is a deficient number, since it is larger than the sum of its proper divisors (19901000087).

99505000405 is a wasteful number, since it uses less digits than its factorization.

99505000405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19901000086.

The product of its (nonzero) digits is 40500, while the sum is 37.

The spelling of 99505000405 in words is "ninety-nine billion, five hundred five million, four hundred five", and thus it is an aban number.