78486870384 has 240 divisors, whose sum is σ = 240424486848. Its totient is φ = 23756156928.

The previous prime is 78486870349. The next prime is 78486870389. The reversal of 78486870384 is 48307868487.

78486870384 is a `hidden beast` number, since 7 + 8 + 486 + 8 + 70 + 3 + 84 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78486870389) 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, 101535022 + ... + 101535794.

Almost surely, 2^78486870384 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 78486870384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120212243424).

78486870384 is an abundant number, since it is smaller than the sum of its proper divisors (161937616464).

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

78486870384 is a wasteful number, since it uses less digits than its factorization.

78486870384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1616 (or 1607 counting only the distinct ones).

The product of its (nonzero) digits is 57802752, while the sum is 63.

The spelling of 78486870384 in words is "seventy-eight billion, four hundred eighty-six million, eight hundred seventy thousand, three hundred eighty-four".