487856658781 has 2 divisors, whose sum is σ = 487856658782. Its totient is φ = 487856658780.

The previous prime is 487856658761. The next prime is 487856658829. The reversal of 487856658781 is 187856658784.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 369462171556 + 118394487225 = 607834^2 + 344085^2 .

It is a cyclic number.

It is not a de Polignac number, because 487856658781 - 2²⁹ = 487319787869 is a prime.

It is a super-2 number, since 2×487856658781² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (487856658761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243928329390 + 243928329391.

It is an arithmetic number, because the mean of its divisors is an integer number (243928329391).

Almost surely, 2^487856658781 is an apocalyptic number.

It is an amenable number.

487856658781 is a deficient number, since it is larger than the sum of its proper divisors (1).

487856658781 is an equidigital number, since it uses as much as digits as its factorization.

487856658781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 722534400, while the sum is 73.

The spelling of 487856658781 in words is "four hundred eighty-seven billion, eight hundred fifty-six million, six hundred fifty-eight thousand, seven hundred eighty-one".