3437379624221 has 2 divisors, whose sum is σ = 3437379624222. Its totient is φ = 3437379624220.

The previous prime is 3437379624199. The next prime is 3437379624323. The reversal of 3437379624221 is 1224269737343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2348216047321 + 1089163576900 = 1532389^2 + 1043630^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3437379624221 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3437379620221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1718689812110 + 1718689812111.

It is an arithmetic number, because the mean of its divisors is an integer number (1718689812111).

Almost surely, 2^{3437379624221} is an apocalyptic number.

It is an amenable number.

3437379624221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3437379624221 is an equidigital number, since it uses as much as digits as its factorization.

3437379624221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9144576, while the sum is 53.

The spelling of 3437379624221 in words is "three trillion, four hundred thirty-seven billion, three hundred seventy-nine million, six hundred twenty-four thousand, two hundred twenty-one".