16660102539 has 4 divisors (see below), whose sum is σ = 22213470056. Its totient is φ = 11106735024.

The previous prime is 16660102499. The next prime is 16660102651. The reversal of 16660102539 is 93520106661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93520106661 = 3 ⋅31173368887.

It is not a de Polignac number, because 16660102539 - 2⁹ = 16660102027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16660102497 and 16660102506.

It is not an unprimeable number, because it can be changed into a prime (16660102339) 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, 2776683754 + ... + 2776683759.

It is an arithmetic number, because the mean of its divisors is an integer number (5553367514).

Almost surely, 2^16660102539 is an apocalyptic number.

16660102539 is a deficient number, since it is larger than the sum of its proper divisors (5553367517).

16660102539 is an equidigital number, since it uses as much as digits as its factorization.

16660102539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5553367516.

The product of its (nonzero) digits is 58320, while the sum is 39.

The spelling of 16660102539 in words is "sixteen billion, six hundred sixty million, one hundred two thousand, five hundred thirty-nine".