160709347921 has 2 divisors, whose sum is σ = 160709347922. Its totient is φ = 160709347920.

The previous prime is 160709347871. The next prime is 160709347951. The reversal of 160709347921 is 129743907061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145283707921 + 15425640000 = 381161^2 + 124200^2 .

It is a cyclic number.

It is not a de Polignac number, because 160709347921 - 2²⁵ = 160675793489 is a prime.

It is not a weakly prime, because it can be changed into another prime (160709347951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80354673960 + 80354673961.

It is an arithmetic number, because the mean of its divisors is an integer number (80354673961).

Almost surely, 2^160709347921 is an apocalyptic number.

It is an amenable number.

160709347921 is a deficient number, since it is larger than the sum of its proper divisors (1).

160709347921 is an equidigital number, since it uses as much as digits as its factorization.

160709347921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 571536, while the sum is 49.

The spelling of 160709347921 in words is "one hundred sixty billion, seven hundred nine million, three hundred forty-seven thousand, nine hundred twenty-one".