78978613248 has 360 divisors, whose sum is σ = 242842983768. Its totient is φ = 25565331456.

The previous prime is 78978613229. The next prime is 78978613249. The reversal of 78978613248 is 84231687987.

78978613248 is a `hidden beast` number, since 7 + 8 + 9 + 7 + 8 + 613 + 2 + 4 + 8 = 666.

It is a super-2 number, since 2×78978613248² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78978613249) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 456523690 + ... + 456523862.

Almost surely, 2^78978613248 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 78978613248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121421491884).

78978613248 is an abundant number, since it is smaller than the sum of its proper divisors (163864370520).

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

78978613248 is an frugal number, since it uses more digits than its factorization.

78978613248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262 (or 221 counting only the distinct ones).

The product of its digits is 32514048, while the sum is 63.

The spelling of 78978613248 in words is "seventy-eight billion, nine hundred seventy-eight million, six hundred thirteen thousand, two hundred forty-eight".