78538853558245 has 8 divisors (see below), whose sum is σ = 94246754741280. Its totient is φ = 62830995865680.

The previous prime is 78538853558237. The next prime is 78538853558309. The reversal of 78538853558245 is 54285535883587.

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

It is not a de Polignac number, because 78538853558245 - 2³ = 78538853558237 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6758115 + ... + 14239024.

It is an arithmetic number, because the mean of its divisors is an integer number (11780844342660).

Almost surely, 2^{78538853558245} is an apocalyptic number.

It is an amenable number.

78538853558245 is a deficient number, since it is larger than the sum of its proper divisors (15707901183035).

78538853558245 is a wasteful number, since it uses less digits than its factorization.

78538853558245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21745235.

The product of its digits is 6451200000, while the sum is 76.

The spelling of 78538853558245 in words is "seventy-eight trillion, five hundred thirty-eight billion, eight hundred fifty-three million, five hundred fifty-eight thousand, two hundred forty-five".