55333670720181 has 16 divisors (see below), whose sum is σ = 84318912075264. Its totient is φ = 31618888794864.

The previous prime is 55333670720177. The next prime is 55333670720231. The reversal of 55333670720181 is 18102707633355.

It is not a de Polignac number, because 55333670720181 - 2² = 55333670720177 is a prime.

It is a super-2 number, since 2×55333670720181² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55333670720161) 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, 12711331 + ... + 16499856.

It is an arithmetic number, because the mean of its divisors is an integer number (5269932004704).

Almost surely, 2^{55333670720181} is an apocalyptic number.

It is an amenable number.

55333670720181 is a deficient number, since it is larger than the sum of its proper divisors (28985241355083).

55333670720181 is a wasteful number, since it uses less digits than its factorization.

55333670720181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29301400.

The product of its (nonzero) digits is 3175200, while the sum is 51.

The spelling of 55333670720181 in words is "fifty-five trillion, three hundred thirty-three billion, six hundred seventy million, seven hundred twenty thousand, one hundred eighty-one".