78883779894684 has 24 divisors (see below), whose sum is σ = 190409123884560. Its totient is φ = 25387883184384.

The previous prime is 78883779894649. The next prime is 78883779894691. The reversal of 78883779894684 is 48649897738887.

It is a junction number, because it is equal to n+sod(n) for n = 78883779894591 and 78883779894600.

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, 113338763869 + ... + 113338764564.

It is an arithmetic number, because the mean of its divisors is an integer number (7933713495190).

Almost surely, 2^{78883779894684} is an apocalyptic number.

It is an amenable number.

78883779894684 is an abundant number, since it is smaller than the sum of its proper divisors (111525343989876).

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

78883779894684 is a wasteful number, since it uses less digits than its factorization.

78883779894684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226677528469 (or 226677528467 counting only the distinct ones).

The product of its digits is 262193283072, while the sum is 96.

The spelling of 78883779894684 in words is "seventy-eight trillion, eight hundred eighty-three billion, seven hundred seventy-nine million, eight hundred ninety-four thousand, six hundred eighty-four".