20029479366893 has 2 divisors, whose sum is σ = 20029479366894. Its totient is φ = 20029479366892.

The previous prime is 20029479366857. The next prime is 20029479366973. The reversal of 20029479366893 is 39866397492002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17534637003844 + 2494842363049 = 4187438^2 + 1579507^2 .

It is a cyclic number.

It is not a de Polignac number, because 20029479366893 - 2¹² = 20029479362797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20029479266893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10014739683446 + 10014739683447.

It is an arithmetic number, because the mean of its divisors is an integer number (10014739683447).

Almost surely, 2^{20029479366893} is an apocalyptic number.

It is an amenable number.

20029479366893 is a deficient number, since it is larger than the sum of its proper divisors (1).

20029479366893 is an equidigital number, since it uses as much as digits as its factorization.

20029479366893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211631616, while the sum is 68.

The spelling of 20029479366893 in words is "twenty trillion, twenty-nine billion, four hundred seventy-nine million, three hundred sixty-six thousand, eight hundred ninety-three".