20033129819 has 2 divisors, whose sum is σ = 20033129820. Its totient is φ = 20033129818.

The previous prime is 20033129813. The next prime is 20033129861. The reversal of 20033129819 is 91892133002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20033129819 - 2⁴ = 20033129803 is a prime.

It is a super-2 number, since 2×20033129819² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20033129813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10016564909 + 10016564910.

It is an arithmetic number, because the mean of its divisors is an integer number (10016564910).

Almost surely, 2^20033129819 is an apocalyptic number.

20033129819 is a deficient number, since it is larger than the sum of its proper divisors (1).

20033129819 is an equidigital number, since it uses as much as digits as its factorization.

20033129819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 38.

The spelling of 20033129819 in words is "twenty billion, thirty-three million, one hundred twenty-nine thousand, eight hundred nineteen".