78678968388 has 48 divisors (see below), whose sum is σ = 188021917440. Its totient is φ = 25595536384.

The previous prime is 78678968371. The next prime is 78678968419. The reversal of 78678968388 is 88386987687.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1498 + ... + 396686.

It is an arithmetic number, because the mean of its divisors is an integer number (3917123280).

Almost surely, 2^78678968388 is an apocalyptic number.

It is an amenable number.

78678968388 is an abundant number, since it is smaller than the sum of its proper divisors (109342949052).

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

78678968388 is a wasteful number, since it uses less digits than its factorization.

78678968388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395596 (or 395594 counting only the distinct ones).

The product of its digits is 1560674304, while the sum is 78.

The spelling of 78678968388 in words is "seventy-eight billion, six hundred seventy-eight million, nine hundred sixty-eight thousand, three hundred eighty-eight".