2129789509147 has 2 divisors, whose sum is σ = 2129789509148. Its totient is φ = 2129789509146.

The previous prime is 2129789509103. The next prime is 2129789509151. The reversal of 2129789509147 is 7419059879212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2129789509147 - 2⁷ = 2129789509019 is a prime.

It is not a weakly prime, because it can be changed into another prime (2129789509157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064894754573 + 1064894754574.

It is an arithmetic number, because the mean of its divisors is an integer number (1064894754574).

Almost surely, 2^{2129789509147} is an apocalyptic number.

2129789509147 is a deficient number, since it is larger than the sum of its proper divisors (1).

2129789509147 is an equidigital number, since it uses as much as digits as its factorization.

2129789509147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22861440, while the sum is 64.

The spelling of 2129789509147 in words is "two trillion, one hundred twenty-nine billion, seven hundred eighty-nine million, five hundred nine thousand, one hundred forty-seven".