78535481284857 has 8 divisors (see below), whose sum is σ = 104720557996576. Its totient is φ = 52353696048192.

The previous prime is 78535481284789. The next prime is 78535481284861. The reversal of 78535481284857 is 75848218453587.

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

It is not a de Polignac number, because 78535481284857 - 2²⁶ = 78535414175993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78535481282857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 822813088 + ... + 822908529.

It is an arithmetic number, because the mean of its divisors is an integer number (13090069749572).

Almost surely, 2^{78535481284857} is an apocalyptic number.

It is an amenable number.

78535481284857 is a deficient number, since it is larger than the sum of its proper divisors (26185076711719).

78535481284857 is a wasteful number, since it uses less digits than its factorization.

78535481284857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645737527.

The product of its digits is 2408448000, while the sum is 75.

The spelling of 78535481284857 in words is "seventy-eight trillion, five hundred thirty-five billion, four hundred eighty-one million, two hundred eighty-four thousand, eight hundred fifty-seven".