990768347168 has 24 divisors (see below), whose sum is σ = 1953618242940. Its totient is φ = 494611333120.

The previous prime is 990768347159. The next prime is 990768347197. The reversal of 990768347168 is 861743867099.

It can be written as a sum of positive squares in 2 ways, for example, as 987662291344 + 3106055824 = 993812^2 + 55732^2 .

It is a junction number, because it is equal to n+sod(n) for n = 990768347098 and 990768347107.

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, 24130433 + ... + 24171456.

Almost surely, 2^990768347168 is an apocalyptic number.

It is an amenable number.

990768347168 is a deficient number, since it is larger than the sum of its proper divisors (962849895772).

990768347168 is a wasteful number, since it uses less digits than its factorization.

990768347168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48302540 (or 48302532 counting only the distinct ones).

The product of its (nonzero) digits is 109734912, while the sum is 68.

The spelling of 990768347168 in words is "nine hundred ninety billion, seven hundred sixty-eight million, three hundred forty-seven thousand, one hundred sixty-eight".