78368275903 has 2 divisors, whose sum is σ = 78368275904. Its totient is φ = 78368275902.

The previous prime is 78368275897. The next prime is 78368275913. The reversal of 78368275903 is 30957286387.

It is a weak prime.

It is an emirp because it is prime and its reverse (30957286387) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78368275903 - 2²⁵ = 78334721471 is a prime.

It is a super-2 number, since 2×78368275903² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78368275913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39184137951 + 39184137952.

It is an arithmetic number, because the mean of its divisors is an integer number (39184137952).

Almost surely, 2^78368275903 is an apocalyptic number.

78368275903 is a deficient number, since it is larger than the sum of its proper divisors (1).

78368275903 is an equidigital number, since it uses as much as digits as its factorization.

78368275903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15240960, while the sum is 58.

The spelling of 78368275903 in words is "seventy-eight billion, three hundred sixty-eight million, two hundred seventy-five thousand, nine hundred three".