2026066621729 has 2 divisors, whose sum is σ = 2026066621730. Its totient is φ = 2026066621728.

The previous prime is 2026066621717. The next prime is 2026066621751. The reversal of 2026066621729 is 9271266606202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1283806834704 + 742259787025 = 1133052^2 + 861545^2 .

It is a cyclic number.

It is not a de Polignac number, because 2026066621729 - 2⁹ = 2026066621217 is a prime.

It is not a weakly prime, because it can be changed into another prime (2026066621129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1013033310864 + 1013033310865.

It is an arithmetic number, because the mean of its divisors is an integer number (1013033310865).

Almost surely, 2^{2026066621729} is an apocalyptic number.

It is an amenable number.

2026066621729 is a deficient number, since it is larger than the sum of its proper divisors (1).

2026066621729 is an equidigital number, since it uses as much as digits as its factorization.

2026066621729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 49.

The spelling of 2026066621729 in words is "two trillion, twenty-six billion, sixty-six million, six hundred twenty-one thousand, seven hundred twenty-nine".