20000329997 has 2 divisors, whose sum is σ = 20000329998. Its totient is φ = 20000329996.

The previous prime is 20000329981. The next prime is 20000330027. The reversal of 20000329997 is 79992300002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19681564681 + 318765316 = 140291^2 + 17854^2 .

It is a cyclic number.

It is not a de Polignac number, because 20000329997 - 2⁴ = 20000329981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20000359997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000164998 + 10000164999.

It is an arithmetic number, because the mean of its divisors is an integer number (10000164999).

Almost surely, 2^20000329997 is an apocalyptic number.

It is an amenable number.

20000329997 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000329997 is an equidigital number, since it uses as much as digits as its factorization.

20000329997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61236, while the sum is 41.

Adding to 20000329997 its reverse (79992300002), we get a palindrome (99992629999).

The spelling of 20000329997 in words is "twenty billion, three hundred twenty-nine thousand, nine hundred ninety-seven".