55011998697171 has 8 divisors (see below), whose sum is σ = 77663998160784. Its totient is φ = 34517332515840.

The previous prime is 55011998697109. The next prime is 55011998697181. The reversal of 55011998697171 is 17179689911055.

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

It is not a de Polignac number, because 55011998697171 - 2²¹ = 55011996600019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55011998697096 and 55011998697105.

It is not an unprimeable number, because it can be changed into a prime (55011998697181) 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 7 ways as a sum of consecutive naturals, for example, 539333320510 + ... + 539333320611.

It is an arithmetic number, because the mean of its divisors is an integer number (9707999770098).

Almost surely, 2^{55011998697171} is an apocalyptic number.

55011998697171 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

55011998697171 is a deficient number, since it is larger than the sum of its proper divisors (22651999463613).

55011998697171 is a wasteful number, since it uses less digits than its factorization.

55011998697171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078666641141.

The product of its (nonzero) digits is 42865200, while the sum is 69.

The spelling of 55011998697171 in words is "fifty-five trillion, eleven billion, nine hundred ninety-eight million, six hundred ninety-seven thousand, one hundred seventy-one".