16998405922 has 4 divisors (see below), whose sum is σ = 25497608886. Its totient is φ = 8499202960.

The previous prime is 16998405913. The next prime is 16998405929. The reversal of 16998405922 is 22950489961.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 13917156841 + 3081249081 = 117971^2 + 55509^2 .

It is not an unprimeable number, because it can be changed into a prime (16998405929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4249601479 + ... + 4249601482.

Almost surely, 2^16998405922 is an apocalyptic number.

16998405922 is a deficient number, since it is larger than the sum of its proper divisors (8499202964).

16998405922 is an equidigital number, since it uses as much as digits as its factorization.

16998405922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8499202963.

The product of its (nonzero) digits is 2799360, while the sum is 55.

The spelling of 16998405922 in words is "sixteen billion, nine hundred ninety-eight million, four hundred five thousand, nine hundred twenty-two".