8491651134827 has 4 divisors (see below), whose sum is σ = 9704744154096. Its totient is φ = 7278558115560.

The previous prime is 8491651134779. The next prime is 8491651134859. The reversal of 8491651134827 is 7284311561948.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8491651134827 - 2³² = 8487356167531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8491651134887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 606546509624 + ... + 606546509637.

It is an arithmetic number, because the mean of its divisors is an integer number (2426186038524).

Almost surely, 2^{8491651134827} is an apocalyptic number.

8491651134827 is a deficient number, since it is larger than the sum of its proper divisors (1213093019269).

8491651134827 is a wasteful number, since it uses less digits than its factorization.

8491651134827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213093019268.

The product of its digits is 11612160, while the sum is 59.

The spelling of 8491651134827 in words is "eight trillion, four hundred ninety-one billion, six hundred fifty-one million, one hundred thirty-four thousand, eight hundred twenty-seven".