16545717665707 has 2 divisors, whose sum is σ = 16545717665708. Its totient is φ = 16545717665706.

The previous prime is 16545717665677. The next prime is 16545717665761. The reversal of 16545717665707 is 70756671754561.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16545717665707 is a prime.

It is not a weakly prime, because it can be changed into another prime (16545717665797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8272858832853 + 8272858832854.

It is an arithmetic number, because the mean of its divisors is an integer number (8272858832854).

Almost surely, 2^{16545717665707} is an apocalyptic number.

16545717665707 is a deficient number, since it is larger than the sum of its proper divisors (1).

16545717665707 is an equidigital number, since it uses as much as digits as its factorization.

16545717665707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259308000, while the sum is 67.

The spelling of 16545717665707 in words is "sixteen trillion, five hundred forty-five billion, seven hundred seventeen million, six hundred sixty-five thousand, seven hundred seven".