55506660555 has 64 divisors (see below), whose sum is σ = 92861306496. Its totient is φ = 28283904000.

The previous prime is 55506660529. The next prime is 55506660557.

55506660555 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55506660555 - 2¹⁰ = 55506659531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55506660557) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 29825325 + ... + 29827185.

It is an arithmetic number, because the mean of its divisors is an integer number (1450957914).

Almost surely, 2^55506660555 is an apocalyptic number.

55506660555 is a deficient number, since it is larger than the sum of its proper divisors (37354645941).

55506660555 is a wasteful number, since it uses less digits than its factorization.

55506660555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2848.

The product of its (nonzero) digits is 3375000, while the sum is 48.

The spelling of 55506660555 in words is "fifty-five billion, five hundred six million, six hundred sixty thousand, five hundred fifty-five".