20034440873929 has 2 divisors, whose sum is σ = 20034440873930. Its totient is φ = 20034440873928.

The previous prime is 20034440873917. The next prime is 20034440873947. The reversal of 20034440873929 is 92937804443002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11579401733904 + 8455039140025 = 3402852^2 + 2907755^2 .

It is a cyclic number.

It is not a de Polignac number, because 20034440873929 - 2¹⁵ = 20034440841161 is a prime.

It is a super-2 number, since 2×20034440873929² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20034440873929.

It is not a weakly prime, because it can be changed into another prime (20034440873729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10017220436964 + 10017220436965.

It is an arithmetic number, because the mean of its divisors is an integer number (10017220436965).

Almost surely, 2^{20034440873929} is an apocalyptic number.

It is an amenable number.

20034440873929 is a deficient number, since it is larger than the sum of its proper divisors (1).

20034440873929 is an equidigital number, since it uses as much as digits as its factorization.

20034440873929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10450944, while the sum is 55.

The spelling of 20034440873929 in words is "twenty trillion, thirty-four billion, four hundred forty million, eight hundred seventy-three thousand, nine hundred twenty-nine".