160728787614821 has 2 divisors, whose sum is σ = 160728787614822. Its totient is φ = 160728787614820.

The previous prime is 160728787614799. The next prime is 160728787614823. The reversal of 160728787614821 is 128416787827061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102577700644225 + 58151086970596 = 10128065^2 + 7625686^2 .

It is a cyclic number.

It is not a de Polignac number, because 160728787614821 - 2⁶ = 160728787614757 is a prime.

Together with 160728787614823, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (160728787614823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80364393807410 + 80364393807411.

It is an arithmetic number, because the mean of its divisors is an integer number (80364393807411).

Almost surely, 2^{160728787614821} is an apocalyptic number.

It is an amenable number.

160728787614821 is a deficient number, since it is larger than the sum of its proper divisors (1).

160728787614821 is an equidigital number, since it uses as much as digits as its factorization.

160728787614821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 101154816, while the sum is 68.

The spelling of 160728787614821 in words is "one hundred sixty trillion, seven hundred twenty-eight billion, seven hundred eighty-seven million, six hundred fourteen thousand, eight hundred twenty-one".