16656101213 has 4 divisors (see below), whose sum is σ = 17043452448. Its totient is φ = 16268749980.

The previous prime is 16656101207. The next prime is 16656101239. The reversal of 16656101213 is 31210165661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31210165661 = 29 ⋅1076212609.

It is a cyclic number.

It is not a de Polignac number, because 16656101213 - 2⁶ = 16656101149 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16656101213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16656101243) 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, 193675553 + ... + 193675638.

It is an arithmetic number, because the mean of its divisors is an integer number (4260863112).

Almost surely, 2^16656101213 is an apocalyptic number.

It is an amenable number.

16656101213 is a deficient number, since it is larger than the sum of its proper divisors (387351235).

16656101213 is an equidigital number, since it uses as much as digits as its factorization.

16656101213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387351234.

The product of its (nonzero) digits is 6480, while the sum is 32.

Adding to 16656101213 its reverse (31210165661), we get a palindrome (47866266874).

The spelling of 16656101213 in words is "sixteen billion, six hundred fifty-six million, one hundred one thousand, two hundred thirteen".