16211910953 has 4 divisors (see below), whose sum is σ = 18527898240. Its totient is φ = 13895923668.

The previous prime is 16211910947. The next prime is 16211910971. The reversal of 16211910953 is 35901911261.

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.

It is a cyclic number.

It is not a de Polignac number, because 16211910953 - 2¹⁸ = 16211648809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16211910943) 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, 1157993633 + ... + 1157993646.

It is an arithmetic number, because the mean of its divisors is an integer number (4631974560).

Almost surely, 2^16211910953 is an apocalyptic number.

It is an amenable number.

16211910953 is a deficient number, since it is larger than the sum of its proper divisors (2315987287).

16211910953 is an equidigital number, since it uses as much as digits as its factorization.

16211910953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2315987286.

The product of its (nonzero) digits is 14580, while the sum is 38.

The spelling of 16211910953 in words is "sixteen billion, two hundred eleven million, nine hundred ten thousand, nine hundred fifty-three".