78839899324 has 6 divisors (see below), whose sum is σ = 137969823824. Its totient is φ = 39419949660.

The previous prime is 78839899301. The next prime is 78839899331. The reversal of 78839899324 is 42399893887.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9854987412 + ... + 9854987419.

Almost surely, 2^78839899324 is an apocalyptic number.

It is an amenable number.

78839899324 is a deficient number, since it is larger than the sum of its proper divisors (59129924500).

78839899324 is a wasteful number, since it uses less digits than its factorization.

78839899324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19709974835 (or 19709974833 counting only the distinct ones).

The product of its digits is 188116992, while the sum is 70.

The spelling of 78839899324 in words is "seventy-eight billion, eight hundred thirty-nine million, eight hundred ninety-nine thousand, three hundred twenty-four".