4261244421641 has 2 divisors, whose sum is σ = 4261244421642. Its totient is φ = 4261244421640.

The previous prime is 4261244421617. The next prime is 4261244421703. The reversal of 4261244421641 is 1461244421624.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3016547186041 + 1244697235600 = 1736821^2 + 1115660^2 .

It is a cyclic number.

It is not a de Polignac number, because 4261244421641 - 2¹⁰ = 4261244420617 is a prime.

It is not a weakly prime, because it can be changed into another prime (4261244421241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2130622210820 + 2130622210821.

It is an arithmetic number, because the mean of its divisors is an integer number (2130622210821).

Almost surely, 2^{4261244421641} is an apocalyptic number.

It is an amenable number.

4261244421641 is a deficient number, since it is larger than the sum of its proper divisors (1).

4261244421641 is an equidigital number, since it uses as much as digits as its factorization.

4261244421641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 294912, while the sum is 41.

The spelling of 4261244421641 in words is "four trillion, two hundred sixty-one billion, two hundred forty-four million, four hundred twenty-one thousand, six hundred forty-one".