162637448321 has 2 divisors, whose sum is σ = 162637448322. Its totient is φ = 162637448320.

The previous prime is 162637448287. The next prime is 162637448329. The reversal of 162637448321 is 123844736261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133546393600 + 29091054721 = 365440^2 + 170561^2 .

It is a cyclic number.

It is not a de Polignac number, because 162637448321 - 2¹⁸ = 162637186177 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (162637448329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81318724160 + 81318724161.

It is an arithmetic number, because the mean of its divisors is an integer number (81318724161).

Almost surely, 2^162637448321 is an apocalyptic number.

It is an amenable number.

162637448321 is a deficient number, since it is larger than the sum of its proper divisors (1).

162637448321 is an equidigital number, since it uses as much as digits as its factorization.

162637448321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1161216, while the sum is 47.

The spelling of 162637448321 in words is "one hundred sixty-two billion, six hundred thirty-seven million, four hundred forty-eight thousand, three hundred twenty-one".