169811472427 has 2 divisors, whose sum is σ = 169811472428. Its totient is φ = 169811472426.

The previous prime is 169811472421. The next prime is 169811472517. The reversal of 169811472427 is 724274118961.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 169811472427 - 2¹¹ = 169811470379 is a prime.

It is not a weakly prime, because it can be changed into another prime (169811472421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84905736213 + 84905736214.

It is an arithmetic number, because the mean of its divisors is an integer number (84905736214).

Almost surely, 2^169811472427 is an apocalyptic number.

169811472427 is a deficient number, since it is larger than the sum of its proper divisors (1).

169811472427 is an equidigital number, since it uses as much as digits as its factorization.

169811472427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1354752, while the sum is 52.

The spelling of 169811472427 in words is "one hundred sixty-nine billion, eight hundred eleven million, four hundred seventy-two thousand, four hundred twenty-seven".