55011109187 has 2 divisors, whose sum is σ = 55011109188. Its totient is φ = 55011109186.

The previous prime is 55011109151. The next prime is 55011109207. The reversal of 55011109187 is 78190111055.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55011109187 - 2⁶ = 55011109123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55011109187.

It is not a weakly prime, because it can be changed into another prime (55011100187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27505554593 + 27505554594.

It is an arithmetic number, because the mean of its divisors is an integer number (27505554594).

Almost surely, 2^55011109187 is an apocalyptic number.

55011109187 is a deficient number, since it is larger than the sum of its proper divisors (1).

55011109187 is an equidigital number, since it uses as much as digits as its factorization.

55011109187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12600, while the sum is 38.

The spelling of 55011109187 in words is "fifty-five billion, eleven million, one hundred nine thousand, one hundred eighty-seven".