55000561116091 has 4 divisors (see below), whose sum is σ = 55004298343632. Its totient is φ = 54996823888552.

The previous prime is 55000561116049. The next prime is 55000561116121. The reversal of 55000561116091 is 19061116500055.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55000561116091 - 2¹¹ = 55000561114043 is a prime.

It is a super-2 number, since 2×55000561116091² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55000561116791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1868591695 + ... + 1868621128.

It is an arithmetic number, because the mean of its divisors is an integer number (13751074585908).

Almost surely, 2^{55000561116091} is an apocalyptic number.

55000561116091 is a deficient number, since it is larger than the sum of its proper divisors (3737227541).

55000561116091 is a wasteful number, since it uses less digits than its factorization.

55000561116091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3737227540.

The product of its (nonzero) digits is 40500, while the sum is 40.

The spelling of 55000561116091 in words is "fifty-five trillion, five hundred sixty-one million, one hundred sixteen thousand, ninety-one".