2421942291617 has 2 divisors, whose sum is σ = 2421942291618. Its totient is φ = 2421942291616.

The previous prime is 2421942291599. The next prime is 2421942291619. The reversal of 2421942291617 is 7161922491242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2148220793761 + 273721497856 = 1465681^2 + 523184^2 .

It is a cyclic number.

It is not a de Polignac number, because 2421942291617 - 2⁶ = 2421942291553 is a prime.

Together with 2421942291619, 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 (2421942291619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1210971145808 + 1210971145809.

It is an arithmetic number, because the mean of its divisors is an integer number (1210971145809).

Almost surely, 2^{2421942291617} is an apocalyptic number.

It is an amenable number.

2421942291617 is a deficient number, since it is larger than the sum of its proper divisors (1).

2421942291617 is an equidigital number, since it uses as much as digits as its factorization.

2421942291617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 50.

The spelling of 2421942291617 in words is "two trillion, four hundred twenty-one billion, nine hundred forty-two million, two hundred ninety-one thousand, six hundred seventeen".