487096812908821 has 2 divisors, whose sum is σ = 487096812908822. Its totient is φ = 487096812908820.

The previous prime is 487096812908813. The next prime is 487096812908831. The reversal of 487096812908821 is 128809218690784.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 483261697769796 + 3835115139025 = 21983214^2 + 1958345^2 .

It is a cyclic number.

It is not a de Polignac number, because 487096812908821 - 2³ = 487096812908813 is a prime.

It is a super-2 number, since 2×487096812908821² (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 (487096812908831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243548406454410 + 243548406454411.

It is an arithmetic number, because the mean of its divisors is an integer number (243548406454411).

Almost surely, 2^{487096812908821} is an apocalyptic number.

It is an amenable number.

487096812908821 is a deficient number, since it is larger than the sum of its proper divisors (1).

487096812908821 is an equidigital number, since it uses as much as digits as its factorization.

487096812908821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 222953472, while the sum is 73.

The spelling of 487096812908821 in words is "four hundred eighty-seven trillion, ninety-six billion, eight hundred twelve million, nine hundred eight thousand, eight hundred twenty-one".