163814609977 has 2 divisors, whose sum is σ = 163814609978. Its totient is φ = 163814609976.

The previous prime is 163814609957. The next prime is 163814610019. The reversal of 163814609977 is 779906418361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 157844111616 + 5970498361 = 397296^2 + 77269^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163814609977 is a prime.

It is not a weakly prime, because it can be changed into another prime (163814609957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81907304988 + 81907304989.

It is an arithmetic number, because the mean of its divisors is an integer number (81907304989).

Almost surely, 2^163814609977 is an apocalyptic number.

It is an amenable number.

163814609977 is a deficient number, since it is larger than the sum of its proper divisors (1).

163814609977 is an equidigital number, since it uses as much as digits as its factorization.

163814609977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13716864, while the sum is 61.

The spelling of 163814609977 in words is "one hundred sixty-three billion, eight hundred fourteen million, six hundred nine thousand, nine hundred seventy-seven".