20230999969 has 2 divisors, whose sum is σ = 20230999970. Its totient is φ = 20230999968.

The previous prime is 20230999967. The next prime is 20230999973. The reversal of 20230999969 is 96999903202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13130409744 + 7100590225 = 114588^2 + 84265^2 .

It is a cyclic number.

It is not a de Polignac number, because 20230999969 - 2¹ = 20230999967 is a prime.

It is a super-2 number, since 2×20230999969² (a number of 21 digits) contains 22 as substring.

Together with 20230999967, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20230999961) 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, 10115499984 + 10115499985.

It is an arithmetic number, because the mean of its divisors is an integer number (10115499985).

Almost surely, 2^20230999969 is an apocalyptic number.

It is an amenable number.

20230999969 is a deficient number, since it is larger than the sum of its proper divisors (1).

20230999969 is an equidigital number, since it uses as much as digits as its factorization.

20230999969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4251528, while the sum is 58.

The spelling of 20230999969 in words is "twenty billion, two hundred thirty million, nine hundred ninety-nine thousand, nine hundred sixty-nine".