581647130106487 has 2 divisors, whose sum is σ = 581647130106488. Its totient is φ = 581647130106486.

The previous prime is 581647130106481. The next prime is 581647130106499. The reversal of 581647130106487 is 784601031746185.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-581647130106487 is a prime.

It is a super-2 number, since 2×581647130106487² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (581647130106481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 290823565053243 + 290823565053244.

It is an arithmetic number, because the mean of its divisors is an integer number (290823565053244).

Almost surely, 2^{581647130106487} is an apocalyptic number.

581647130106487 is a deficient number, since it is larger than the sum of its proper divisors (1).

581647130106487 is an equidigital number, since it uses as much as digits as its factorization.

581647130106487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27095040, while the sum is 61.

The spelling of 581647130106487 in words is "five hundred eighty-one trillion, six hundred forty-seven billion, one hundred thirty million, one hundred six thousand, four hundred eighty-seven".