55516556005 has 16 divisors (see below), whose sum is σ = 70545438000. Its totient is φ = 41796698112.

The previous prime is 55516556003. The next prime is 55516556021. The reversal of 55516556005 is 50065561555.

It can be written as a sum of positive squares in 8 ways, for example, as 6947889316 + 48568666689 = 83354^2 + 220383^2 .

It is a cyclic number.

It is not a de Polignac number, because 55516556005 - 2¹ = 55516556003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55516556003) 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, 1101517 + ... + 1150813.

It is an arithmetic number, because the mean of its divisors is an integer number (4409089875).

Almost surely, 2^55516556005 is an apocalyptic number.

It is an amenable number.

55516556005 is a deficient number, since it is larger than the sum of its proper divisors (15028881995).

55516556005 is a wasteful number, since it uses less digits than its factorization.

55516556005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62568.

The product of its (nonzero) digits is 562500, while the sum is 43.

The spelling of 55516556005 in words is "fifty-five billion, five hundred sixteen million, five hundred fifty-six thousand, five".