160555863521 has 2 divisors, whose sum is σ = 160555863522. Its totient is φ = 160555863520.

The previous prime is 160555863509. The next prime is 160555863527. The reversal of 160555863521 is 125368555061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138700380625 + 21855482896 = 372425^2 + 147836^2 .

It is a cyclic number.

It is not a de Polignac number, because 160555863521 - 2¹⁰ = 160555862497 is a prime.

It is not a weakly prime, because it can be changed into another prime (160555863527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80277931760 + 80277931761.

It is an arithmetic number, because the mean of its divisors is an integer number (80277931761).

Almost surely, 2^160555863521 is an apocalyptic number.

It is an amenable number.

160555863521 is a deficient number, since it is larger than the sum of its proper divisors (1).

160555863521 is an equidigital number, since it uses as much as digits as its factorization.

160555863521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080000, while the sum is 47.

The spelling of 160555863521 in words is "one hundred sixty billion, five hundred fifty-five million, eight hundred sixty-three thousand, five hundred twenty-one".