55005051000081 has 16 divisors (see below), whose sum is σ = 90264699077504. Its totient is φ = 29013653274624.

The previous prime is 55005051000077. The next prime is 55005051000089. The reversal of 55005051000081 is 18000015050055.

It is not a de Polignac number, because 55005051000081 - 2² = 55005051000077 is a prime.

It is a super-2 number, since 2×55005051000081² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55005051000089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100741851376 + ... + 100741851921.

It is an arithmetic number, because the mean of its divisors is an integer number (5641543692344).

Almost surely, 2^{55005051000081} is an apocalyptic number.

It is an amenable number.

55005051000081 is a deficient number, since it is larger than the sum of its proper divisors (35259648077423).

55005051000081 is a wasteful number, since it uses less digits than its factorization.

55005051000081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201483703320.

The product of its (nonzero) digits is 5000, while the sum is 30.

The spelling of 55005051000081 in words is "fifty-five trillion, five billion, fifty-one million, eighty-one", and thus it is an aban number and an uban number.