2129789509019 has 2 divisors, whose sum is σ = 2129789509020. Its totient is φ = 2129789509018.

The previous prime is 2129789508961. The next prime is 2129789509021. The reversal of 2129789509019 is 9109059879212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2129789509019 is a prime.

It is a super-2 number, since 2×2129789509019² (a number of 25 digits) contains 22 as substring.

Together with 2129789509021, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2129789509219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064894754509 + 1064894754510.

It is an arithmetic number, because the mean of its divisors is an integer number (1064894754510).

Almost surely, 2^{2129789509019} is an apocalyptic number.

2129789509019 is a deficient number, since it is larger than the sum of its proper divisors (1).

2129789509019 is an equidigital number, since it uses as much as digits as its factorization.

2129789509019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7348320, while the sum is 62.

The spelling of 2129789509019 in words is "two trillion, one hundred twenty-nine billion, seven hundred eighty-nine million, five hundred nine thousand, nineteen".