990717717098 has 8 divisors (see below), whose sum is σ = 1564291132320. Its totient is φ = 469287339660.

The previous prime is 990717717097. The next prime is 990717717113. The reversal of 990717717098 is 890717717099.

990717717098 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

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 3 ways as a sum of consecutive naturals, for example, 13035759398 + ... + 13035759473.

It is an arithmetic number, because the mean of its divisors is an integer number (195536391540).

Almost surely, 2^990717717098 is an apocalyptic number.

990717717098 is a deficient number, since it is larger than the sum of its proper divisors (573573415222).

990717717098 is a wasteful number, since it uses less digits than its factorization.

990717717098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26071518892.

The product of its (nonzero) digits is 14002632, while the sum is 65.

Subtracting from 990717717098 its reverse (890717717099), we obtain a palindrome (99999999999).

The spelling of 990717717098 in words is "nine hundred ninety billion, seven hundred seventeen million, seven hundred seventeen thousand, ninety-eight".