78044453471 has 2 divisors, whose sum is σ = 78044453472. Its totient is φ = 78044453470.

The previous prime is 78044453467. The next prime is 78044453491. The reversal of 78044453471 is 17435444087.

It is a weak prime.

It is an emirp because it is prime and its reverse (17435444087) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78044453471 - 2² = 78044453467 is a prime.

It is a super-3 number, since 3×78044453471³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78044453441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39022226735 + 39022226736.

It is an arithmetic number, because the mean of its divisors is an integer number (39022226736).

Almost surely, 2^78044453471 is an apocalyptic number.

78044453471 is a deficient number, since it is larger than the sum of its proper divisors (1).

78044453471 is an equidigital number, since it uses as much as digits as its factorization.

78044453471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1505280, while the sum is 47.

The spelling of 78044453471 in words is "seventy-eight billion, forty-four million, four hundred fifty-three thousand, four hundred seventy-one".