20200321969 has 2 divisors, whose sum is σ = 20200321970. Its totient is φ = 20200321968.

The previous prime is 20200321949. The next prime is 20200322057. The reversal of 20200321969 is 96912300202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13580872369 + 6619449600 = 116537^2 + 81360^2 .

It is a cyclic number.

It is not a de Polignac number, because 20200321969 - 2⁵ = 20200321937 is a prime.

It is a super-2 number, since 2×20200321969² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20200321919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100160984 + 10100160985.

It is an arithmetic number, because the mean of its divisors is an integer number (10100160985).

Almost surely, 2^20200321969 is an apocalyptic number.

It is an amenable number.

20200321969 is a deficient number, since it is larger than the sum of its proper divisors (1).

20200321969 is an equidigital number, since it uses as much as digits as its factorization.

20200321969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 34.

The spelling of 20200321969 in words is "twenty billion, two hundred million, three hundred twenty-one thousand, nine hundred sixty-nine".