16411148921 has 2 divisors, whose sum is σ = 16411148922. Its totient is φ = 16411148920.

The previous prime is 16411148881. The next prime is 16411148947. The reversal of 16411148921 is 12984111461.

16411148921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15778123321 + 633025600 = 125611^2 + 25160^2 .

It is a cyclic number.

It is not a de Polignac number, because 16411148921 - 2¹⁴ = 16411132537 is a prime.

It is not a weakly prime, because it can be changed into another prime (16411148821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8205574460 + 8205574461.

It is an arithmetic number, because the mean of its divisors is an integer number (8205574461).

Almost surely, 2^16411148921 is an apocalyptic number.

It is an amenable number.

16411148921 is a deficient number, since it is larger than the sum of its proper divisors (1).

16411148921 is an equidigital number, since it uses as much as digits as its factorization.

16411148921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 38.

The spelling of 16411148921 in words is "sixteen billion, four hundred eleven million, one hundred forty-eight thousand, nine hundred twenty-one".