78504131184419 has 2 divisors, whose sum is σ = 78504131184420. Its totient is φ = 78504131184418.

The previous prime is 78504131184403. The next prime is 78504131184431. The reversal of 78504131184419 is 91448113140587.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78504131184419 - 2⁴ = 78504131184403 is a prime.

It is a super-2 number, since 2×78504131184419² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78504131184439) 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, 39252065592209 + 39252065592210.

It is an arithmetic number, because the mean of its divisors is an integer number (39252065592210).

Almost surely, 2^{78504131184419} is an apocalyptic number.

78504131184419 is a deficient number, since it is larger than the sum of its proper divisors (1).

78504131184419 is an equidigital number, since it uses as much as digits as its factorization.

78504131184419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3870720, while the sum is 56.

The spelling of 78504131184419 in words is "seventy-eight trillion, five hundred four billion, one hundred thirty-one million, one hundred eighty-four thousand, four hundred nineteen".