16418807277473 has 2 divisors, whose sum is σ = 16418807277474. Its totient is φ = 16418807277472.

The previous prime is 16418807277451. The next prime is 16418807277487. The reversal of 16418807277473 is 37477270881461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9342265606144 + 7076541671329 = 3056512^2 + 2660177^2 .

It is a cyclic number.

It is not a de Polignac number, because 16418807277473 - 2¹⁰ = 16418807276449 is a prime.

It is not a weakly prime, because it can be changed into another prime (16418807270473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8209403638736 + 8209403638737.

It is an arithmetic number, because the mean of its divisors is an integer number (8209403638737).

Almost surely, 2^{16418807277473} is an apocalyptic number.

It is an amenable number.

16418807277473 is a deficient number, since it is larger than the sum of its proper divisors (1).

16418807277473 is an equidigital number, since it uses as much as digits as its factorization.

16418807277473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 88510464, while the sum is 65.

The spelling of 16418807277473 in words is "sixteen trillion, four hundred eighteen billion, eight hundred seven million, two hundred seventy-seven thousand, four hundred seventy-three".