78660838228 has 24 divisors (see below), whose sum is σ = 157442673024. Its totient is φ = 33685860000.

The previous prime is 78660838219. The next prime is 78660838253. The reversal of 78660838228 is 82283806687.

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, 1043248 + ... + 1116103.

It is an arithmetic number, because the mean of its divisors is an integer number (6560111376).

Almost surely, 2^78660838228 is an apocalyptic number.

It is an amenable number.

78660838228 is an abundant number, since it is smaller than the sum of its proper divisors (78781834796).

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

78660838228 is a wasteful number, since it uses less digits than its factorization.

78660838228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2160663 (or 2160661 counting only the distinct ones).

The product of its (nonzero) digits is 12386304, while the sum is 58.

The spelling of 78660838228 in words is "seventy-eight billion, six hundred sixty million, eight hundred thirty-eight thousand, two hundred twenty-eight".