78546054247 has 8 divisors (see below), whose sum is σ = 80870105232. Its totient is φ = 76232592000.

The previous prime is 78546054239. The next prime is 78546054263. The reversal of 78546054247 is 74245064587.

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

It is a cyclic number.

It is not a de Polignac number, because 78546054247 - 2³ = 78546054239 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78546054194 and 78546054203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78546054217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2632129 + ... + 2661802.

It is an arithmetic number, because the mean of its divisors is an integer number (10108763154).

Almost surely, 2^78546054247 is an apocalyptic number.

78546054247 is a deficient number, since it is larger than the sum of its proper divisors (2324050985).

78546054247 is a wasteful number, since it uses less digits than its factorization.

78546054247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5294369.

The product of its (nonzero) digits is 7526400, while the sum is 52.

The spelling of 78546054247 in words is "seventy-eight billion, five hundred forty-six million, fifty-four thousand, two hundred forty-seven".