55916166191 has 2 divisors, whose sum is σ = 55916166192. Its totient is φ = 55916166190.

The previous prime is 55916166181. The next prime is 55916166209. The reversal of 55916166191 is 19166161955.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55916166191 - 2³⁴ = 38736297007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55916166181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27958083095 + 27958083096.

It is an arithmetic number, because the mean of its divisors is an integer number (27958083096).

Almost surely, 2^55916166191 is an apocalyptic number.

55916166191 is a deficient number, since it is larger than the sum of its proper divisors (1).

55916166191 is an equidigital number, since it uses as much as digits as its factorization.

55916166191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 437400, while the sum is 50.

The spelling of 55916166191 in words is "fifty-five billion, nine hundred sixteen million, one hundred sixty-six thousand, one hundred ninety-one".