505545055651 has 16 divisors (see below), whose sum is σ = 538121558016. Its totient is φ = 474143400000.

The previous prime is 505545055649. The next prime is 505545055657. The reversal of 505545055651 is 156550545505.

It is a cyclic number.

It is not a de Polignac number, because 505545055651 - 2¹ = 505545055649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (505545055657) 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 in 15 ways as a sum of consecutive naturals, for example, 1125145 + ... + 1508986.

It is an arithmetic number, because the mean of its divisors is an integer number (33632597376).

Almost surely, 2^505545055651 is an apocalyptic number.

505545055651 is a deficient number, since it is larger than the sum of its proper divisors (32576502365).

505545055651 is a wasteful number, since it uses less digits than its factorization.

505545055651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2634354.

The product of its (nonzero) digits is 1875000, while the sum is 46.

The spelling of 505545055651 in words is "five hundred five billion, five hundred forty-five million, fifty-five thousand, six hundred fifty-one".