78691983048 has 96 divisors (see below), whose sum is σ = 243609412800. Its totient is φ = 22479825024.

The previous prime is 78691983047. The next prime is 78691983067. The reversal of 78691983048 is 84038919687.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (78691983047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6229683 + ... + 6242301.

It is an arithmetic number, because the mean of its divisors is an integer number (2537598050).

Almost surely, 2^78691983048 is an apocalyptic number.

It is an amenable number.

78691983048 is an abundant number, since it is smaller than the sum of its proper divisors (164917429752).

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

78691983048 is a wasteful number, since it uses less digits than its factorization.

78691983048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25011 (or 25004 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 63.

The spelling of 78691983048 in words is "seventy-eight billion, six hundred ninety-one million, nine hundred eighty-three thousand, forty-eight".