162688641601 has 2 divisors, whose sum is σ = 162688641602. Its totient is φ = 162688641600.

The previous prime is 162688641593. The next prime is 162688641613. The reversal of 162688641601 is 106146886261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141226391601 + 21462250000 = 375801^2 + 146500^2 .

It is a cyclic number.

It is not a de Polignac number, because 162688641601 - 2³ = 162688641593 is a prime.

It is not a weakly prime, because it can be changed into another prime (162688641641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81344320800 + 81344320801.

It is an arithmetic number, because the mean of its divisors is an integer number (81344320801).

Almost surely, 2^162688641601 is an apocalyptic number.

It is an amenable number.

162688641601 is a deficient number, since it is larger than the sum of its proper divisors (1).

162688641601 is an equidigital number, since it uses as much as digits as its factorization.

162688641601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 663552, while the sum is 49.

The spelling of 162688641601 in words is "one hundred sixty-two billion, six hundred eighty-eight million, six hundred forty-one thousand, six hundred one".