78504381172427 has 8 divisors (see below), whose sum is σ = 89719348498176. Its totient is φ = 67289427779112.

The previous prime is 78504381172423. The next prime is 78504381172453. The reversal of 78504381172427 is 72427118340587.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78504381172427 - 2² = 78504381172423 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78504381172421) 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 in 7 ways as a sum of consecutive naturals, for example, 15457748 + ... + 19898510.

It is an arithmetic number, because the mean of its divisors is an integer number (11214918562272).

Almost surely, 2^{78504381172427} is an apocalyptic number.

78504381172427 is a deficient number, since it is larger than the sum of its proper divisors (11214967325749).

78504381172427 is a wasteful number, since it uses less digits than its factorization.

78504381172427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6966217.

The product of its (nonzero) digits is 21073920, while the sum is 59.

The spelling of 78504381172427 in words is "seventy-eight trillion, five hundred four billion, three hundred eighty-one million, one hundred seventy-two thousand, four hundred twenty-seven".