162705157649 has 2 divisors, whose sum is σ = 162705157650. Its totient is φ = 162705157648.

The previous prime is 162705157609. The next prime is 162705157679. The reversal of 162705157649 is 946751507261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88808172049 + 73896985600 = 298007^2 + 271840^2 .

It is a cyclic number.

It is not a de Polignac number, because 162705157649 - 2¹⁶ = 162705092113 is a prime.

It is a super-3 number, since 3×162705157649³ (a number of 35 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 162705157649.

It is not a weakly prime, because it can be changed into another prime (162705157609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81352578824 + 81352578825.

It is an arithmetic number, because the mean of its divisors is an integer number (81352578825).

Almost surely, 2^162705157649 is an apocalyptic number.

It is an amenable number.

162705157649 is a deficient number, since it is larger than the sum of its proper divisors (1).

162705157649 is an equidigital number, since it uses as much as digits as its factorization.

162705157649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3175200, while the sum is 53.

The spelling of 162705157649 in words is "one hundred sixty-two billion, seven hundred five million, one hundred fifty-seven thousand, six hundred forty-nine".