16215677111 has 4 divisors (see below), whose sum is σ = 16216084032. Its totient is φ = 16215270192.

The previous prime is 16215677089. The next prime is 16215677117. The reversal of 16215677111 is 11177651261.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16215677111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16215677117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136295 + ... + 225848.

It is an arithmetic number, because the mean of its divisors is an integer number (4054021008).

Almost surely, 2^16215677111 is an apocalyptic number.

16215677111 is a deficient number, since it is larger than the sum of its proper divisors (406921).

16215677111 is an equidigital number, since it uses as much as digits as its factorization.

16215677111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406920.

The product of its digits is 17640, while the sum is 38.

The spelling of 16215677111 in words is "sixteen billion, two hundred fifteen million, six hundred seventy-seven thousand, one hundred eleven".