320021030009969 has 2 divisors, whose sum is σ = 320021030009970. Its totient is φ = 320021030009968.

The previous prime is 320021030009959. The next prime is 320021030010007. The reversal of 320021030009969 is 969900030120023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 250686897279025 + 69334132730944 = 15833095^2 + 8326712^2 .

It is a cyclic number.

It is not a de Polignac number, because 320021030009969 - 2²⁰ = 320021028961393 is a prime.

It is a super-2 number, since 2×320021030009969² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (320021030009929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160010515004984 + 160010515004985.

It is an arithmetic number, because the mean of its divisors is an integer number (160010515004985).

Almost surely, 2^{320021030009969} is an apocalyptic number.

It is an amenable number.

320021030009969 is a deficient number, since it is larger than the sum of its proper divisors (1).

320021030009969 is an equidigital number, since it uses as much as digits as its factorization.

320021030009969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 157464, while the sum is 44.

The spelling of 320021030009969 in words is "three hundred twenty trillion, twenty-one billion, thirty million, nine thousand, nine hundred sixty-nine".