55500566505 has 16 divisors (see below), whose sum is σ = 91665452544. Its totient is φ = 28645453440.

The previous prime is 55500566503. The next prime is 55500566551. The reversal of 55500566505 is 50566500555.

It is not a de Polignac number, because 55500566505 - 2¹ = 55500566503 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55500566503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59677564 + ... + 59678493.

It is an arithmetic number, because the mean of its divisors is an integer number (5729090784).

Almost surely, 2^55500566505 is an apocalyptic number.

It is an amenable number.

55500566505 is a deficient number, since it is larger than the sum of its proper divisors (36164886039).

55500566505 is a wasteful number, since it uses less digits than its factorization.

55500566505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119356096.

The product of its (nonzero) digits is 562500, while the sum is 42.

The spelling of 55500566505 in words is "fifty-five billion, five hundred million, five hundred sixty-six thousand, five hundred five".