78688674246812 has 24 divisors (see below), whose sum is σ = 157399649774304. Its totient is φ = 33718938688512.

The previous prime is 78688674246803. The next prime is 78688674246829. The reversal of 78688674246812 is 21864247688687.

78688674246812 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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, 198917453 + ... + 199312644.

It is an arithmetic number, because the mean of its divisors is an integer number (6558318740596).

Almost surely, 2^{78688674246812} is an apocalyptic number.

It is an amenable number.

78688674246812 is an abundant number, since it is smaller than the sum of its proper divisors (78710975527492).

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

78688674246812 is a wasteful number, since it uses less digits than its factorization.

78688674246812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398237165 (or 398237163 counting only the distinct ones).

The product of its digits is 2774532096, while the sum is 77.

The spelling of 78688674246812 in words is "seventy-eight trillion, six hundred eighty-eight billion, six hundred seventy-four million, two hundred forty-six thousand, eight hundred twelve".