16545776032129 has 2 divisors, whose sum is σ = 16545776032130. Its totient is φ = 16545776032128.

The previous prime is 16545776032087. The next prime is 16545776032213. The reversal of 16545776032129 is 92123067754561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13878433792129 + 2667342240000 = 3725377^2 + 1633200^2 .

It is an emirp because it is prime and its reverse (92123067754561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16545776032129 - 2⁷ = 16545776032001 is a prime.

It is not a weakly prime, because it can be changed into another prime (16545776032529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8272888016064 + 8272888016065.

It is an arithmetic number, because the mean of its divisors is an integer number (8272888016065).

Almost surely, 2^{16545776032129} is an apocalyptic number.

It is an amenable number.

16545776032129 is a deficient number, since it is larger than the sum of its proper divisors (1).

16545776032129 is an equidigital number, since it uses as much as digits as its factorization.

16545776032129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19051200, while the sum is 58.

The spelling of 16545776032129 in words is "sixteen trillion, five hundred forty-five billion, seven hundred seventy-six million, thirty-two thousand, one hundred twenty-nine".