78949186560 has 264 divisors, whose sum is σ = 278051313696. Its totient is φ = 20707246080.

The previous prime is 78949186559. The next prime is 78949186601. The reversal of 78949186560 is 6568194987.

78949186560 is a `hidden beast` number, since 7 + 8 + 9 + 491 + 86 + 5 + 60 = 666.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2796837 + ... + 2824923.

Almost surely, 2^78949186560 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 78949186560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139025656848).

78949186560 is an abundant number, since it is smaller than the sum of its proper divisors (199102127136).

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

78949186560 is a wasteful number, since it uses less digits than its factorization.

78949186560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28179 (or 28158 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 63.

The spelling of 78949186560 in words is "seventy-eight billion, nine hundred forty-nine million, one hundred eighty-six thousand, five hundred sixty".