581238685463 has 2 divisors, whose sum is σ = 581238685464. Its totient is φ = 581238685462.

The previous prime is 581238685277. The next prime is 581238685481. The reversal of 581238685463 is 364586832185.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 581238685463 - 2¹⁸ = 581238423319 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (581238685493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 290619342731 + 290619342732.

It is an arithmetic number, because the mean of its divisors is an integer number (290619342732).

Almost surely, 2^581238685463 is an apocalyptic number.

581238685463 is a deficient number, since it is larger than the sum of its proper divisors (1).

581238685463 is an equidigital number, since it uses as much as digits as its factorization.

581238685463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33177600, while the sum is 59.

The spelling of 581238685463 in words is "five hundred eighty-one billion, two hundred thirty-eight million, six hundred eighty-five thousand, four hundred sixty-three".