8151481116811 has 4 divisors (see below), whose sum is σ = 8151560047800. Its totient is φ = 8151402185824.

The previous prime is 8151481116781. The next prime is 8151481116881. The reversal of 8151481116811 is 1186111841518.

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 8151481116811 - 2⁷ = 8151481116683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8151481116881) 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, 39310381 + ... + 39517198.

It is an arithmetic number, because the mean of its divisors is an integer number (2037890011950).

Almost surely, 2^{8151481116811} is an apocalyptic number.

8151481116811 is a deficient number, since it is larger than the sum of its proper divisors (78930989).

8151481116811 is a wasteful number, since it uses less digits than its factorization.

8151481116811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78930988.

The product of its digits is 61440, while the sum is 46.

The spelling of 8151481116811 in words is "eight trillion, one hundred fifty-one billion, four hundred eighty-one million, one hundred sixteen thousand, eight hundred eleven".