3241874781421 has 2 divisors, whose sum is σ = 3241874781422. Its totient is φ = 3241874781420.

The previous prime is 3241874781377. The next prime is 3241874781473. The reversal of 3241874781421 is 1241874781423.

It is an a-pointer prime, because the next prime (3241874781473) can be obtained adding 3241874781421 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1935743516100 + 1306131265321 = 1391310^2 + 1142861^2 .

It is an emirp because it is prime and its reverse (1241874781423) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3241874781421 - 2¹³ = 3241874773229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3241874781491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1620937390710 + 1620937390711.

It is an arithmetic number, because the mean of its divisors is an integer number (1620937390711).

Almost surely, 2^{3241874781421} is an apocalyptic number.

It is an amenable number.

3241874781421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3241874781421 is an equidigital number, since it uses as much as digits as its factorization.

3241874781421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2408448, while the sum is 52.

The spelling of 3241874781421 in words is "three trillion, two hundred forty-one billion, eight hundred seventy-four million, seven hundred eighty-one thousand, four hundred twenty-one".