78654286788 has 144 divisors (see below), whose sum is σ = 230761681920. Its totient is φ = 20410568640.

The previous prime is 78654286769. The next prime is 78654286849. The reversal of 78654286788 is 88768245687.

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, 13240723 + ... + 13246661.

It is an arithmetic number, because the mean of its divisors is an integer number (1602511680).

Almost surely, 2^78654286788 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 78654286788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115380840960).

78654286788 is an abundant number, since it is smaller than the sum of its proper divisors (152107395132).

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

78654286788 is a wasteful number, since it uses less digits than its factorization.

78654286788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7278 (or 7265 counting only the distinct ones).

The product of its digits is 289013760, while the sum is 69.

The spelling of 78654286788 in words is "seventy-eight billion, six hundred fifty-four million, two hundred eighty-six thousand, seven hundred eighty-eight".