2129653693439 has 2 divisors, whose sum is σ = 2129653693440. Its totient is φ = 2129653693438.

The previous prime is 2129653693429. The next prime is 2129653693501. The reversal of 2129653693439 is 9343963569212.

It is a happy number.

It is an a-pointer prime, because the next prime (2129653693501) can be obtained adding 2129653693439 to its sum of digits (62).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2129653693439 - 2¹⁶ = 2129653627903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2129653693429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064826846719 + 1064826846720.

It is an arithmetic number, because the mean of its divisors is an integer number (1064826846720).

Almost surely, 2^{2129653693439} is an apocalyptic number.

2129653693439 is a deficient number, since it is larger than the sum of its proper divisors (1).

2129653693439 is an equidigital number, since it uses as much as digits as its factorization.

2129653693439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56687040, while the sum is 62.

The spelling of 2129653693439 in words is "two trillion, one hundred twenty-nine billion, six hundred fifty-three million, six hundred ninety-three thousand, four hundred thirty-nine".