16398597607 has 18 divisors (see below), whose sum is σ = 19421425608. Its totient is φ = 13563121824.

The previous prime is 16398597571. The next prime is 16398597623. The reversal of 16398597607 is 70679589361.

It is a de Polignac number, because none of the positive numbers 2^k-16398597607 is a prime.

It is a super-2 number, since 2×16398597607² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16398597107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 9824569 + ... + 9826237.

Almost surely, 2^16398597607 is an apocalyptic number.

16398597607 is a deficient number, since it is larger than the sum of its proper divisors (3022828001).

16398597607 is an frugal number, since it uses more digits than its factorization.

16398597607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3403 (or 1705 counting only the distinct ones).

The product of its (nonzero) digits is 17146080, while the sum is 61.

The spelling of 16398597607 in words is "sixteen billion, three hundred ninety-eight million, five hundred ninety-seven thousand, six hundred seven".