78399440003 has 2 divisors, whose sum is σ = 78399440004. Its totient is φ = 78399440002.

The previous prime is 78399439991. The next prime is 78399440011. The reversal of 78399440003 is 30004499387.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78399440003 - 2³⁰ = 77325698179 is a prime.

It is a super-2 number, since 2×78399440003² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78399440003.

It is not a weakly prime, because it can be changed into another prime (78399440303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39199720001 + 39199720002.

It is an arithmetic number, because the mean of its divisors is an integer number (39199720002).

Almost surely, 2^78399440003 is an apocalyptic number.

78399440003 is a deficient number, since it is larger than the sum of its proper divisors (1).

78399440003 is an equidigital number, since it uses as much as digits as its factorization.

78399440003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 47.

The spelling of 78399440003 in words is "seventy-eight billion, three hundred ninety-nine million, four hundred forty thousand, three".