78875786612844 has 144 divisors (see below), whose sum is σ = 220431578631264. Its totient is φ = 23626170547200.

The previous prime is 78875786612839. The next prime is 78875786612891. The reversal of 78875786612844 is 44821668757887.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4387227 + ... + 13304109.

It is an arithmetic number, because the mean of its divisors is an integer number (1530774851606).

Almost surely, 2^{78875786612844} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78875786612844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110215789315632).

78875786612844 is an abundant number, since it is smaller than the sum of its proper divisors (141555792018420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78875786612844 is a wasteful number, since it uses less digits than its factorization.

78875786612844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8917408 (or 8917403 counting only the distinct ones).

The product of its digits is 8092385280, while the sum is 81.

The spelling of 78875786612844 in words is "seventy-eight trillion, eight hundred seventy-five billion, seven hundred eighty-six million, six hundred twelve thousand, eight hundred forty-four".