505510100987 has 2 divisors, whose sum is σ = 505510100988. Its totient is φ = 505510100986.

The previous prime is 505510100933. The next prime is 505510100993. The reversal of 505510100987 is 789001015505.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 505510100987 - 2¹² = 505510096891 is a prime.

It is not a weakly prime, because it can be changed into another prime (505510106987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252755050493 + 252755050494.

It is an arithmetic number, because the mean of its divisors is an integer number (252755050494).

Almost surely, 2^505510100987 is an apocalyptic number.

505510100987 is a deficient number, since it is larger than the sum of its proper divisors (1).

505510100987 is an equidigital number, since it uses as much as digits as its factorization.

505510100987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63000, while the sum is 41.

The spelling of 505510100987 in words is "five hundred five billion, five hundred ten million, one hundred thousand, nine hundred eighty-seven".