8133455365991 has 16 divisors (see below), whose sum is σ = 8243915097600. Its totient is φ = 8023778435328.

The previous prime is 8133455365967. The next prime is 8133455366063. The reversal of 8133455365991 is 1995635543318.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8133455365991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8133455365961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52989905 + ... + 53143173.

It is an arithmetic number, because the mean of its divisors is an integer number (515244693600).

Almost surely, 2^{8133455365991} is an apocalyptic number.

8133455365991 is a deficient number, since it is larger than the sum of its proper divisors (110459731609).

8133455365991 is a wasteful number, since it uses less digits than its factorization.

8133455365991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155818.

The product of its digits is 52488000, while the sum is 62.

The spelling of 8133455365991 in words is "eight trillion, one hundred thirty-three billion, four hundred fifty-five million, three hundred sixty-five thousand, nine hundred ninety-one".