16614426284821 has 2 divisors, whose sum is σ = 16614426284822. Its totient is φ = 16614426284820.

The previous prime is 16614426284759. The next prime is 16614426284849. The reversal of 16614426284821 is 12848262441661.

16614426284821 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., 10461595644721 + 6152830640100 = 3234439^2 + 2480490^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16614426284821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16614426284851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8307213142410 + 8307213142411.

It is an arithmetic number, because the mean of its divisors is an integer number (8307213142411).

Almost surely, 2^{16614426284821} is an apocalyptic number.

It is an amenable number.

16614426284821 is a deficient number, since it is larger than the sum of its proper divisors (1).

16614426284821 is an equidigital number, since it uses as much as digits as its factorization.

16614426284821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7077888, while the sum is 55.

The spelling of 16614426284821 in words is "sixteen trillion, six hundred fourteen billion, four hundred twenty-six million, two hundred eighty-four thousand, eight hundred twenty-one".