8151481116881 has 2 divisors, whose sum is σ = 8151481116882. Its totient is φ = 8151481116880.

The previous prime is 8151481116781. The next prime is 8151481116899. The reversal of 8151481116881 is 1886111841518.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6909406530625 + 1242074586256 = 2628575^2 + 1114484^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8151481116881 is a prime.

It is a super-2 number, since 2×8151481116881² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8151481116481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4075740558440 + 4075740558441.

It is an arithmetic number, because the mean of its divisors is an integer number (4075740558441).

Almost surely, 2^{8151481116881} is an apocalyptic number.

It is an amenable number.

8151481116881 is a deficient number, since it is larger than the sum of its proper divisors (1).

8151481116881 is an equidigital number, since it uses as much as digits as its factorization.

8151481116881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 491520, while the sum is 53.

The spelling of 8151481116881 in words is "eight trillion, one hundred fifty-one billion, four hundred eighty-one million, one hundred sixteen thousand, eight hundred eighty-one".