505556055609 has 32 divisors (see below), whose sum is σ = 737396352000. Its totient is φ = 305547735360.

The previous prime is 505556055593. The next prime is 505556055617. The reversal of 505556055609 is 906550655505.

It is not a de Polignac number, because 505556055609 - 2⁴ = 505556055593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (505556055689) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21874942 + ... + 21898040.

It is an arithmetic number, because the mean of its divisors is an integer number (23043636000).

Almost surely, 2^505556055609 is an apocalyptic number.

It is an amenable number.

505556055609 is a deficient number, since it is larger than the sum of its proper divisors (231840296391).

505556055609 is a wasteful number, since it uses less digits than its factorization.

505556055609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24925.

The product of its (nonzero) digits is 5062500, while the sum is 51.

The spelling of 505556055609 in words is "five hundred five billion, five hundred fifty-six million, fifty-five thousand, six hundred nine".