2129542670291 has 2 divisors, whose sum is σ = 2129542670292. Its totient is φ = 2129542670290.

The previous prime is 2129542670279. The next prime is 2129542670369. The reversal of 2129542670291 is 1920762459212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2129542670291 is a prime.

It is not a weakly prime, because it can be changed into another prime (2129542670251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064771335145 + 1064771335146.

It is an arithmetic number, because the mean of its divisors is an integer number (1064771335146).

Almost surely, 2^{2129542670291} is an apocalyptic number.

2129542670291 is a deficient number, since it is larger than the sum of its proper divisors (1).

2129542670291 is an equidigital number, since it uses as much as digits as its factorization.

2129542670291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 2129542670291 in words is "two trillion, one hundred twenty-nine billion, five hundred forty-two million, six hundred seventy thousand, two hundred ninety-one".