162023687521 has 2 divisors, whose sum is σ = 162023687522. Its totient is φ = 162023687520.

The previous prime is 162023687459. The next prime is 162023687563. The reversal of 162023687521 is 125786320261.

162023687521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81245521296 + 80778166225 = 285036^2 + 284215^2 .

It is a cyclic number.

It is not a de Polignac number, because 162023687521 - 2¹⁷ = 162023556449 is a prime.

It is a super-2 number, since 2×162023687521² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (162023687621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81011843760 + 81011843761.

It is an arithmetic number, because the mean of its divisors is an integer number (81011843761).

Almost surely, 2^162023687521 is an apocalyptic number.

It is an amenable number.

162023687521 is a deficient number, since it is larger than the sum of its proper divisors (1).

162023687521 is an equidigital number, since it uses as much as digits as its factorization.

162023687521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 162023687521 in words is "one hundred sixty-two billion, twenty-three million, six hundred eighty-seven thousand, five hundred twenty-one".