487721908787 has 2 divisors, whose sum is σ = 487721908788. Its totient is φ = 487721908786.

The previous prime is 487721908741. The next prime is 487721908819. The reversal of 487721908787 is 787809127784.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 487721908787 - 2¹⁴ = 487721892403 is a prime.

It is a super-2 number, since 2×487721908787² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (487721905787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243860954393 + 243860954394.

It is an arithmetic number, because the mean of its divisors is an integer number (243860954394).

Almost surely, 2^487721908787 is an apocalyptic number.

487721908787 is a deficient number, since it is larger than the sum of its proper divisors (1).

487721908787 is an equidigital number, since it uses as much as digits as its factorization.

487721908787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 88510464, while the sum is 68.

The spelling of 487721908787 in words is "four hundred eighty-seven billion, seven hundred twenty-one million, nine hundred eight thousand, seven hundred eighty-seven".