1521381246941 has 2 divisors, whose sum is σ = 1521381246942. Its totient is φ = 1521381246940.

The previous prime is 1521381246907. The next prime is 1521381246967. The reversal of 1521381246941 is 1496421831251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1117997481316 + 403383765625 = 1057354^2 + 635125^2 .

It is a cyclic number.

It is not a de Polignac number, because 1521381246941 - 2⁶ = 1521381246877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1521381246901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760690623470 + 760690623471.

It is an arithmetic number, because the mean of its divisors is an integer number (760690623471).

Almost surely, 2^{1521381246941} is an apocalyptic number.

It is an amenable number.

1521381246941 is a deficient number, since it is larger than the sum of its proper divisors (1).

1521381246941 is an equidigital number, since it uses as much as digits as its factorization.

1521381246941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 47.

The spelling of 1521381246941 in words is "one trillion, five hundred twenty-one billion, three hundred eighty-one million, two hundred forty-six thousand, nine hundred forty-one".