2141728271491 has 2 divisors, whose sum is σ = 2141728271492. Its totient is φ = 2141728271490.

The previous prime is 2141728271483. The next prime is 2141728271531. The reversal of 2141728271491 is 1941728271412.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2141728271491 - 2³ = 2141728271483 is a prime.

It is not a weakly prime, because it can be changed into another prime (2141728272491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070864135745 + 1070864135746.

It is an arithmetic number, because the mean of its divisors is an integer number (1070864135746).

Almost surely, 2^{2141728271491} is an apocalyptic number.

2141728271491 is a deficient number, since it is larger than the sum of its proper divisors (1).

2141728271491 is an equidigital number, since it uses as much as digits as its factorization.

2141728271491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 451584, while the sum is 49.

The spelling of 2141728271491 in words is "two trillion, one hundred forty-one billion, seven hundred twenty-eight million, two hundred seventy-one thousand, four hundred ninety-one".