78689276424 has 192 divisors, whose sum is σ = 244061475840. Its totient is φ = 22671031680.

The previous prime is 78689276423. The next prime is 78689276429. The reversal of 78689276424 is 42467298687.

It is not an unprimeable number, because it can be changed into a prime (78689276423) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3029139 + ... + 3055005.

It is an arithmetic number, because the mean of its divisors is an integer number (1271153520).

Almost surely, 2^78689276424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78689276424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122030737920).

78689276424 is an abundant number, since it is smaller than the sum of its proper divisors (165372199416).

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

78689276424 is a wasteful number, since it uses less digits than its factorization.

78689276424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26080 (or 26073 counting only the distinct ones).

The product of its digits is 65028096, while the sum is 63.

The spelling of 78689276424 in words is "seventy-eight billion, six hundred eighty-nine million, two hundred seventy-six thousand, four hundred twenty-four".