16502242502609 has 2 divisors, whose sum is σ = 16502242502610. Its totient is φ = 16502242502608.

The previous prime is 16502242502573. The next prime is 16502242502633. The reversal of 16502242502609 is 90620524220561.

It is a happy number.

16502242502609 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., 12913263811009 + 3588978691600 = 3593503^2 + 1894460^2 .

It is a cyclic number.

It is not a de Polignac number, because 16502242502609 - 2¹² = 16502242498513 is a prime.

It is a super-2 number, since 2×16502242502609² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16502242502609.

It is not a weakly prime, because it can be changed into another prime (16502242504609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8251121251304 + 8251121251305.

It is an arithmetic number, because the mean of its divisors is an integer number (8251121251305).

Almost surely, 2^{16502242502609} is an apocalyptic number.

It is an amenable number.

16502242502609 is a deficient number, since it is larger than the sum of its proper divisors (1).

16502242502609 is an equidigital number, since it uses as much as digits as its factorization.

16502242502609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 518400, while the sum is 44.

The spelling of 16502242502609 in words is "sixteen trillion, five hundred two billion, two hundred forty-two million, five hundred two thousand, six hundred nine".