2421897418849 has 2 divisors, whose sum is σ = 2421897418850. Its totient is φ = 2421897418848.

The previous prime is 2421897418817. The next prime is 2421897418877. The reversal of 2421897418849 is 9488147981242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2187441000000 + 234456418849 = 1479000^2 + 484207^2 .

It is a cyclic number.

It is not a de Polignac number, because 2421897418849 - 2⁵ = 2421897418817 is a prime.

It is not a weakly prime, because it can be changed into another prime (2421897418049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1210948709424 + 1210948709425.

It is an arithmetic number, because the mean of its divisors is an integer number (1210948709425).

Almost surely, 2^{2421897418849} is an apocalyptic number.

It is an amenable number.

2421897418849 is a deficient number, since it is larger than the sum of its proper divisors (1).

2421897418849 is an equidigital number, since it uses as much as digits as its factorization.

2421897418849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 74317824, while the sum is 67.

The spelling of 2421897418849 in words is "two trillion, four hundred twenty-one billion, eight hundred ninety-seven million, four hundred eighteen thousand, eight hundred forty-nine".