16159993403 has 4 divisors (see below), whose sum is σ = 16241199600. Its totient is φ = 16078787208.

The previous prime is 16159993393. The next prime is 16159993439. The reversal of 16159993403 is 30439995161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30439995161 = 4447 ⋅6845063.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16159993403 is a prime.

It is a super-2 number, since 2×16159993403² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16159993483) 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, 40602800 + ... + 40603197.

It is an arithmetic number, because the mean of its divisors is an integer number (4060299900).

Almost surely, 2^16159993403 is an apocalyptic number.

16159993403 is a deficient number, since it is larger than the sum of its proper divisors (81206197).

16159993403 is an equidigital number, since it uses as much as digits as its factorization.

16159993403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81206196.

The product of its (nonzero) digits is 787320, while the sum is 50.

The spelling of 16159993403 in words is "sixteen billion, one hundred fifty-nine million, nine hundred ninety-three thousand, four hundred three".