16418382577 has 2 divisors, whose sum is σ = 16418382578. Its totient is φ = 16418382576.

The previous prime is 16418382557. The next prime is 16418382611. The reversal of 16418382577 is 77528381461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12347432161 + 4070950416 = 111119^2 + 63804^2 .

It is a cyclic number.

It is not a de Polignac number, because 16418382577 - 2¹⁵ = 16418349809 is a prime.

It is not a weakly prime, because it can be changed into another prime (16418382557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8209191288 + 8209191289.

It is an arithmetic number, because the mean of its divisors is an integer number (8209191289).

Almost surely, 2^16418382577 is an apocalyptic number.

It is an amenable number.

16418382577 is a deficient number, since it is larger than the sum of its proper divisors (1).

16418382577 is an equidigital number, since it uses as much as digits as its factorization.

16418382577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2257920, while the sum is 52.

The spelling of 16418382577 in words is "sixteen billion, four hundred eighteen million, three hundred eighty-two thousand, five hundred seventy-seven".