7782799979 has 2 divisors, whose sum is σ = 7782799980. Its totient is φ = 7782799978.

The previous prime is 7782799967. The next prime is 7782799991. The reversal of 7782799979 is 9799972877.

It is a balanced prime because it is at equal distance from previous prime (7782799967) and next prime (7782799991).

It is a cyclic number.

It is not a de Polignac number, because 7782799979 - 2¹² = 7782795883 is a prime.

It is not a weakly prime, because it can be changed into another prime (7782799909) 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, 3891399989 + 3891399990.

It is an arithmetic number, because the mean of its divisors is an integer number (3891399990).

Almost surely, 2^7782799979 is an apocalyptic number.

7782799979 is a deficient number, since it is larger than the sum of its proper divisors (1).

7782799979 is an equidigital number, since it uses as much as digits as its factorization.

7782799979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 252047376, while the sum is 74.

The square root of 7782799979 is about 88220.1789785081. The cubic root of 7782799979 is about 1981.7336768624.

The spelling of 7782799979 in words is "seven billion, seven hundred eighty-two million, seven hundred ninety-nine thousand, nine hundred seventy-nine".