55506649505 has 16 divisors (see below), whose sum is σ = 67024399104. Its totient is φ = 44127948480.

The previous prime is 55506649483. The next prime is 55506649531. The reversal of 55506649505 is 50594660555.

It is not a de Polignac number, because 55506649505 - 2¹⁸ = 55506387361 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1985132 + ... + 2012898.

It is an arithmetic number, because the mean of its divisors is an integer number (4189024944).

Almost surely, 2^55506649505 is an apocalyptic number.

It is an amenable number.

55506649505 is a deficient number, since it is larger than the sum of its proper divisors (11517749599).

55506649505 is a wasteful number, since it uses less digits than its factorization.

55506649505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30256.

The product of its (nonzero) digits is 4050000, while the sum is 50.

The spelling of 55506649505 in words is "fifty-five billion, five hundred six million, six hundred forty-nine thousand, five hundred five".