5551155660191 has 2 divisors, whose sum is σ = 5551155660192. Its totient is φ = 5551155660190.

The previous prime is 5551155660041. The next prime is 5551155660203. The reversal of 5551155660191 is 1910665511555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5551155660191 - 2¹⁰ = 5551155659167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5551155660691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2775577830095 + 2775577830096.

It is an arithmetic number, because the mean of its divisors is an integer number (2775577830096).

Almost surely, 2^{5551155660191} is an apocalyptic number.

5551155660191 is a deficient number, since it is larger than the sum of its proper divisors (1).

5551155660191 is an equidigital number, since it uses as much as digits as its factorization.

5551155660191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1012500, while the sum is 50.

The spelling of 5551155660191 in words is "five trillion, five hundred fifty-one billion, one hundred fifty-five million, six hundred sixty thousand, one hundred ninety-one".