421544760313 has 2 divisors, whose sum is σ = 421544760314. Its totient is φ = 421544760312.

The previous prime is 421544760269. The next prime is 421544760341. The reversal of 421544760313 is 313067445124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 417176475664 + 4368284649 = 645892^2 + 66093^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421544760313 is a prime.

It is not a weakly prime, because it can be changed into another prime (421544760383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210772380156 + 210772380157.

It is an arithmetic number, because the mean of its divisors is an integer number (210772380157).

Almost surely, 2^421544760313 is an apocalyptic number.

It is an amenable number.

421544760313 is a deficient number, since it is larger than the sum of its proper divisors (1).

421544760313 is an equidigital number, since it uses as much as digits as its factorization.

421544760313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 421544760313 in words is "four hundred twenty-one billion, five hundred forty-four million, seven hundred sixty thousand, three hundred thirteen".