16598003997 has 16 divisors (see below), whose sum is σ = 22196325312. Its totient is φ = 11032560000.

The previous prime is 16598003993. The next prime is 16598004029. The reversal of 16598003997 is 79930089561.

It is not a de Polignac number, because 16598003997 - 2² = 16598003993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16598003993) 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 in 15 ways as a sum of consecutive naturals, for example, 1469622 + ... + 1480872.

It is an arithmetic number, because the mean of its divisors is an integer number (1387270332).

Almost surely, 2^16598003997 is an apocalyptic number.

It is an amenable number.

16598003997 is a deficient number, since it is larger than the sum of its proper divisors (5598321315).

16598003997 is a wasteful number, since it uses less digits than its factorization.

16598003997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12668.

The product of its (nonzero) digits is 3674160, while the sum is 57.

The spelling of 16598003997 in words is "sixteen billion, five hundred ninety-eight million, three thousand, nine hundred ninety-seven".