8721411511 has 2 divisors, whose sum is σ = 8721411512. Its totient is φ = 8721411510.

The previous prime is 8721411467. The next prime is 8721411539. The reversal of 8721411511 is 1151141278.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8721411511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8721411551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4360705755 + 4360705756.

It is an arithmetic number, because the mean of its divisors is an integer number (4360705756).

Almost surely, 2^8721411511 is an apocalyptic number.

8721411511 is a deficient number, since it is larger than the sum of its proper divisors (1).

8721411511 is an equidigital number, since it uses as much as digits as its factorization.

8721411511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2240, while the sum is 31.

The square root of 8721411511 is about 93388.4977446366. The cubic root of 8721411511 is about 2058.3959857072.

Adding to 8721411511 its reverse (1151141278), we get a palindrome (9872552789).

The spelling of 8721411511 in words is "eight billion, seven hundred twenty-one million, four hundred eleven thousand, five hundred eleven".