99663436490 has 8 divisors (see below), whose sum is σ = 179394185700. Its totient is φ = 39865374592.

The previous prime is 99663436471. The next prime is 99663436517. The reversal of 99663436490 is 9463436699.

It can be written as a sum of positive squares in 2 ways, for example, as 89298771241 + 10364665249 = 298829^2 + 101807^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon 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, 4983171815 + ... + 4983171834.

Almost surely, 2^99663436490 is an apocalyptic number.

99663436490 is a deficient number, since it is larger than the sum of its proper divisors (79730749210).

99663436490 is a wasteful number, since it uses less digits than its factorization.

99663436490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9966343656.

The product of its (nonzero) digits is 22674816, while the sum is 59.

The spelling of 99663436490 in words is "ninety-nine billion, six hundred sixty-three million, four hundred thirty-six thousand, four hundred ninety".