421344441337 has 2 divisors, whose sum is σ = 421344441338. Its totient is φ = 421344441336.

The previous prime is 421344441317. The next prime is 421344441347. The reversal of 421344441337 is 733144443124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 329738944441 + 91605496896 = 574229^2 + 302664^2 .

It is a cyclic number.

It is not a de Polignac number, because 421344441337 - 2²³ = 421336052729 is a prime.

It is a super-2 number, since 2×421344441337² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 421344441337.

It is not a weakly prime, because it can be changed into another prime (421344441317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210672220668 + 210672220669.

It is an arithmetic number, because the mean of its divisors is an integer number (210672220669).

Almost surely, 2^421344441337 is an apocalyptic number.

It is an amenable number.

421344441337 is a deficient number, since it is larger than the sum of its proper divisors (1).

421344441337 is an equidigital number, since it uses as much as digits as its factorization.

421344441337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 40.

The spelling of 421344441337 in words is "four hundred twenty-one billion, three hundred forty-four million, four hundred forty-one thousand, three hundred thirty-seven".