990688218296 has 48 divisors (see below), whose sum is σ = 2160901254240. Its totient is φ = 424563189120.

The previous prime is 990688218253. The next prime is 990688218307. The reversal of 990688218296 is 692812886099.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15126356 + ... + 15191708.

It is an arithmetic number, because the mean of its divisors is an integer number (45018776130).

Almost surely, 2^990688218296 is an apocalyptic number.

It is an amenable number.

990688218296 is an abundant number, since it is smaller than the sum of its proper divisors (1170213035944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

990688218296 is a wasteful number, since it uses less digits than its factorization.

990688218296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104044 (or 104033 counting only the distinct ones).

The product of its (nonzero) digits is 53747712, while the sum is 68.

The spelling of 990688218296 in words is "nine hundred ninety billion, six hundred eighty-eight million, two hundred eighteen thousand, two hundred ninety-six".