163601911477 has 2 divisors, whose sum is σ = 163601911478. Its totient is φ = 163601911476.

The previous prime is 163601911453. The next prime is 163601911483. The reversal of 163601911477 is 774119106361.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113893425361 + 49708486116 = 337481^2 + 222954^2 .

It is a cyclic number.

It is not a de Polignac number, because 163601911477 - 2³¹ = 161454427829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163601917477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81800955738 + 81800955739.

It is an arithmetic number, because the mean of its divisors is an integer number (81800955739).

Almost surely, 2^163601911477 is an apocalyptic number.

It is an amenable number.

163601911477 is a deficient number, since it is larger than the sum of its proper divisors (1).

163601911477 is an equidigital number, since it uses as much as digits as its factorization.

163601911477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 190512, while the sum is 46.

The spelling of 163601911477 in words is "one hundred sixty-three billion, six hundred one million, nine hundred eleven thousand, four hundred seventy-seven".