990496388199611 has 4 divisors (see below), whose sum is σ = 993681264046224. Its totient is φ = 987311512353000.

The previous prime is 990496388199557. The next prime is 990496388199631. The reversal of 990496388199611 is 116991883694099.

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 990496388199611 - 2¹⁸ = 990496387937467 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 990496388199611.

It is not an unprimeable number, because it can be changed into a prime (990496388199631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1592437922840 + ... + 1592437923461.

It is an arithmetic number, because the mean of its divisors is an integer number (248420316011556).

Almost surely, 2^{990496388199611} is an apocalyptic number.

990496388199611 is a deficient number, since it is larger than the sum of its proper divisors (3184875846613).

990496388199611 is a wasteful number, since it uses less digits than its factorization.

990496388199611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3184875846612.

The product of its (nonzero) digits is 1632586752, while the sum is 83.

The spelling of 990496388199611 in words is "nine hundred ninety trillion, four hundred ninety-six billion, three hundred eighty-eight million, one hundred ninety-nine thousand, six hundred eleven".