3421234642549 has 2 divisors, whose sum is σ = 3421234642550. Its totient is φ = 3421234642548.

The previous prime is 3421234642453. The next prime is 3421234642559. The reversal of 3421234642549 is 9452464321243.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2350144188324 + 1071090454225 = 1533018^2 + 1034935^2 .

It is a cyclic number.

It is not a de Polignac number, because 3421234642549 - 2²⁵ = 3421201088117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3421234642559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1710617321274 + 1710617321275.

It is an arithmetic number, because the mean of its divisors is an integer number (1710617321275).

Almost surely, 2^{3421234642549} is an apocalyptic number.

It is an amenable number.

3421234642549 is a deficient number, since it is larger than the sum of its proper divisors (1).

3421234642549 is an equidigital number, since it uses as much as digits as its factorization.

3421234642549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4976640, while the sum is 49.

The spelling of 3421234642549 in words is "three trillion, four hundred twenty-one billion, two hundred thirty-four million, six hundred forty-two thousand, five hundred forty-nine".