55156566005 has 8 divisors (see below), whose sum is σ = 66189284352. Its totient is φ = 44124316048.

The previous prime is 55156565993. The next prime is 55156566007. The reversal of 55156566005 is 50066565155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55156566005 - 2²⁰ = 55155517429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55156566007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242204 + ... + 411066.

It is an arithmetic number, because the mean of its divisors is an integer number (8273660544).

Almost surely, 2^55156566005 is an apocalyptic number.

It is an amenable number.

55156566005 is a deficient number, since it is larger than the sum of its proper divisors (11032718347).

55156566005 is a wasteful number, since it uses less digits than its factorization.

55156566005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234195.

The product of its (nonzero) digits is 675000, while the sum is 44.

The spelling of 55156566005 in words is "fifty-five billion, one hundred fifty-six million, five hundred sixty-six thousand, five".