7821140959 has 2 divisors, whose sum is σ = 7821140960. Its totient is φ = 7821140958.

The previous prime is 7821140927. The next prime is 7821141049. The reversal of 7821140959 is 9590411287.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7821140959 - 2⁵ = 7821140927 is a prime.

It is a super-2 number, since 2×7821140959² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7821140909) 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, 3910570479 + 3910570480.

It is an arithmetic number, because the mean of its divisors is an integer number (3910570480).

Almost surely, 2^7821140959 is an apocalyptic number.

7821140959 is a deficient number, since it is larger than the sum of its proper divisors (1).

7821140959 is an equidigital number, since it uses as much as digits as its factorization.

7821140959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 46.

The square root of 7821140959 is about 88437.2147854058. The cubic root of 7821140959 is about 1984.9826010103.

The spelling of 7821140959 in words is "seven billion, eight hundred twenty-one million, one hundred forty thousand, nine hundred fifty-nine".