16564047347503 has 2 divisors, whose sum is σ = 16564047347504. Its totient is φ = 16564047347502.

The previous prime is 16564047347459. The next prime is 16564047347509. The reversal of 16564047347503 is 30574374046561.

It is a strong prime.

It is an emirp because it is prime and its reverse (30574374046561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16564047347503 - 2¹³ = 16564047339311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16564047347509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8282023673751 + 8282023673752.

It is an arithmetic number, because the mean of its divisors is an integer number (8282023673752).

Almost surely, 2^{16564047347503} is an apocalyptic number.

16564047347503 is a deficient number, since it is larger than the sum of its proper divisors (1).

16564047347503 is an equidigital number, since it uses as much as digits as its factorization.

16564047347503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25401600, while the sum is 55.

The spelling of 16564047347503 in words is "sixteen trillion, five hundred sixty-four billion, forty-seven million, three hundred forty-seven thousand, five hundred three".