20242240169 has 2 divisors, whose sum is σ = 20242240170. Its totient is φ = 20242240168.

The previous prime is 20242240163. The next prime is 20242240241. The reversal of 20242240169 is 96104224202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17858847769 + 2383392400 = 133637^2 + 48820^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20242240169 is a prime.

It is a super-2 number, since 2×20242240169² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20242240163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10121120084 + 10121120085.

It is an arithmetic number, because the mean of its divisors is an integer number (10121120085).

Almost surely, 2^20242240169 is an apocalyptic number.

It is an amenable number.

20242240169 is a deficient number, since it is larger than the sum of its proper divisors (1).

20242240169 is an equidigital number, since it uses as much as digits as its factorization.

20242240169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 20242240169 in words is "twenty billion, two hundred forty-two million, two hundred forty thousand, one hundred sixty-nine".