990717717099 has 16 divisors (see below), whose sum is σ = 1445647941504. Its totient is φ = 598516651200.

The previous prime is 990717717097. The next prime is 990717717113.

990717717099 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 990717717099 - 2¹ = 990717717097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (990717717097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47947737 + ... + 47968394.

It is an arithmetic number, because the mean of its divisors is an integer number (90352996344).

Almost surely, 2^990717717099 is an apocalyptic number.

990717717099 is a deficient number, since it is larger than the sum of its proper divisors (454930224405).

990717717099 is a wasteful number, since it uses less digits than its factorization.

990717717099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95916458.

The product of its (nonzero) digits is 15752961, while the sum is 66.

The spelling of 990717717099 in words is "nine hundred ninety billion, seven hundred seventeen million, seven hundred seventeen thousand, ninety-nine".