56111601409191 has 12 divisors (see below), whose sum is σ = 83664609986880. Its totient is φ = 36201033167040.

The previous prime is 56111601409183. The next prime is 56111601409223. The reversal of 56111601409191 is 19190410611165.

56111601409191 is a `hidden beast` number, since 5 + 611 + 1 + 6 + 0 + 14 + 0 + 9 + 19 + 1 = 666.

It is not a de Polignac number, because 56111601409191 - 2³ = 56111601409183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56111601409121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100558425186 + ... + 100558425743.

It is an arithmetic number, because the mean of its divisors is an integer number (6972050832240).

Almost surely, 2^{56111601409191} is an apocalyptic number.

56111601409191 is a deficient number, since it is larger than the sum of its proper divisors (27553008577689).

56111601409191 is a wasteful number, since it uses less digits than its factorization.

56111601409191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201116850966 (or 201116850963 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 45.

The spelling of 56111601409191 in words is "fifty-six trillion, one hundred eleven billion, six hundred one million, four hundred nine thousand, one hundred ninety-one".