55661812018051 has 8 divisors (see below), whose sum is σ = 55693329565104. Its totient is φ = 55630302305280.

The previous prime is 55661812018037. The next prime is 55661812018097. The reversal of 55661812018051 is 15081021816655.

55661812018051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 55661812018051 - 2¹¹ = 55661812016003 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55661812017986 and 55661812018004.

It is not an unprimeable number, because it can be changed into a prime (55661812013051) 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, 12284556 + ... + 16193638.

It is an arithmetic number, because the mean of its divisors is an integer number (6961666195638).

Almost surely, 2^{55661812018051} is an apocalyptic number.

55661812018051 is a deficient number, since it is larger than the sum of its proper divisors (31517547053).

55661812018051 is a wasteful number, since it uses less digits than its factorization.

55661812018051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3917141.

The product of its (nonzero) digits is 576000, while the sum is 49.

The spelling of 55661812018051 in words is "fifty-five trillion, six hundred sixty-one billion, eight hundred twelve million, eighteen thousand, fifty-one".