20004023969 has 2 divisors, whose sum is σ = 20004023970. Its totient is φ = 20004023968.

The previous prime is 20004023953. The next prime is 20004024031. The reversal of 20004023969 is 96932040002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10417264225 + 9586759744 = 102065^2 + 97912^2 .

It is a cyclic number.

It is not a de Polignac number, because 20004023969 - 2⁴ = 20004023953 is a prime.

It is a super-2 number, since 2×20004023969² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20004023929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10002011984 + 10002011985.

It is an arithmetic number, because the mean of its divisors is an integer number (10002011985).

Almost surely, 2^20004023969 is an apocalyptic number.

It is an amenable number.

20004023969 is a deficient number, since it is larger than the sum of its proper divisors (1).

20004023969 is an equidigital number, since it uses as much as digits as its factorization.

20004023969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 35.

The spelling of 20004023969 in words is "twenty billion, four million, twenty-three thousand, nine hundred sixty-nine".