78563845547 has 8 divisors (see below), whose sum is σ = 85708046592. Its totient is φ = 71419983400.

The previous prime is 78563845517. The next prime is 78563845583. The reversal of 78563845547 is 74554836587.

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 78563845547 - 2²⁰ = 78562796971 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78563845547.

It is not an unprimeable number, because it can be changed into a prime (78563845517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 821378 + ... + 912024.

It is an arithmetic number, because the mean of its divisors is an integer number (10713505824).

Almost surely, 2^78563845547 is an apocalyptic number.

78563845547 is a deficient number, since it is larger than the sum of its proper divisors (7144201045).

78563845547 is a wasteful number, since it uses less digits than its factorization.

78563845547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169449.

The product of its digits is 112896000, while the sum is 62.

The spelling of 78563845547 in words is "seventy-eight billion, five hundred sixty-three million, eight hundred forty-five thousand, five hundred forty-seven".