16598224138 has 8 divisors (see below), whose sum is σ = 24898447332. Its totient is φ = 8298741696.

The previous prime is 16598224099. The next prime is 16598224157. The reversal of 16598224138 is 83142289561.

It can be written as a sum of positive squares in 2 ways, for example, as 14572594089 + 2025630049 = 120717^2 + 45007^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 16598224091 and 16598224100.

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, 125295 + ... + 221122.

Almost surely, 2^16598224138 is an apocalyptic number.

16598224138 is a deficient number, since it is larger than the sum of its proper divisors (8300223194).

16598224138 is a wasteful number, since it uses less digits than its factorization.

16598224138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370376.

The product of its digits is 829440, while the sum is 49.

The spelling of 16598224138 in words is "sixteen billion, five hundred ninety-eight million, two hundred twenty-four thousand, one hundred thirty-eight".