16615656103 has 4 divisors (see below), whose sum is σ = 16620103720. Its totient is φ = 16611208488.

The previous prime is 16615656097. The next prime is 16615656107. The reversal of 16615656103 is 30165651661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30165651661 = 269 ⋅112139969.

It is a cyclic number.

It is not a de Polignac number, because 16615656103 - 2²⁵ = 16582101671 is a prime.

It is a super-2 number, since 2×16615656103² (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 (16615656107) 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, 2218200 + ... + 2225677.

It is an arithmetic number, because the mean of its divisors is an integer number (4155025930).

Almost surely, 2^16615656103 is an apocalyptic number.

16615656103 is a deficient number, since it is larger than the sum of its proper divisors (4447617).

16615656103 is an equidigital number, since it uses as much as digits as its factorization.

16615656103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4447616.

The product of its (nonzero) digits is 97200, while the sum is 40.

The spelling of 16615656103 in words is "sixteen billion, six hundred fifteen million, six hundred fifty-six thousand, one hundred three".