169809771479053 has 2 divisors, whose sum is σ = 169809771479054. Its totient is φ = 169809771479052.

The previous prime is 169809771479011. The next prime is 169809771479093. The reversal of 169809771479053 is 350974177908961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167180840004649 + 2628931474404 = 12929843^2 + 1621398^2 .

It is a cyclic number.

It is not a de Polignac number, because 169809771479053 - 2¹³ = 169809771470861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (169809771479093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84904885739526 + 84904885739527.

It is an arithmetic number, because the mean of its divisors is an integer number (84904885739527).

Almost surely, 2^{169809771479053} is an apocalyptic number.

It is an amenable number.

169809771479053 is a deficient number, since it is larger than the sum of its proper divisors (1).

169809771479053 is an equidigital number, since it uses as much as digits as its factorization.

169809771479053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720135360, while the sum is 76.

The spelling of 169809771479053 in words is "one hundred sixty-nine trillion, eight hundred nine billion, seven hundred seventy-one million, four hundred seventy-nine thousand, fifty-three".