2421897418817 has 2 divisors, whose sum is σ = 2421897418818. Its totient is φ = 2421897418816.

The previous prime is 2421897418807. The next prime is 2421897418849. The reversal of 2421897418817 is 7188147981242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1716626660401 + 705270758416 = 1310201^2 + 839804^2 .

It is a cyclic number.

It is not a de Polignac number, because 2421897418817 - 2¹⁴ = 2421897402433 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2421897418817.

It is not a weakly prime, because it can be changed into another prime (2421897418807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1210948709408 + 1210948709409.

It is an arithmetic number, because the mean of its divisors is an integer number (1210948709409).

Almost surely, 2^{2421897418817} is an apocalyptic number.

It is an amenable number.

2421897418817 is a deficient number, since it is larger than the sum of its proper divisors (1).

2421897418817 is an equidigital number, since it uses as much as digits as its factorization.

2421897418817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14450688, while the sum is 62.

The spelling of 2421897418817 in words is "two trillion, four hundred twenty-one billion, eight hundred ninety-seven million, four hundred eighteen thousand, eight hundred seventeen".