78483345709 has 2 divisors, whose sum is σ = 78483345710. Its totient is φ = 78483345708.

The previous prime is 78483345691. The next prime is 78483345713. The reversal of 78483345709 is 90754338487.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46309748809 + 32173596900 = 215197^2 + 179370^2 .

It is a cyclic number.

It is not a de Polignac number, because 78483345709 - 2¹¹ = 78483343661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78483345739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39241672854 + 39241672855.

It is an arithmetic number, because the mean of its divisors is an integer number (39241672855).

Almost surely, 2^78483345709 is an apocalyptic number.

It is an amenable number.

78483345709 is a deficient number, since it is larger than the sum of its proper divisors (1).

78483345709 is an equidigital number, since it uses as much as digits as its factorization.

78483345709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20321280, while the sum is 58.

The spelling of 78483345709 in words is "seventy-eight billion, four hundred eighty-three million, three hundred forty-five thousand, seven hundred nine".