78478586802 has 480 divisors, whose sum is σ = 231665043456. Its totient is φ = 19417527360.

The previous prime is 78478586773. The next prime is 78478586821. The reversal of 78478586802 is 20868587487.

78478586802 is a `hidden beast` number, since 7 + 8 + 47 + 8 + 586 + 8 + 0 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 78478586802.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 277309353 + ... + 277309635.

Almost surely, 2^78478586802 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78478586802, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115832521728).

78478586802 is an abundant number, since it is smaller than the sum of its proper divisors (153186456654).

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

78478586802 is a wasteful number, since it uses less digits than its factorization.

78478586802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416 (or 396 counting only the distinct ones).

The product of its (nonzero) digits is 48168960, while the sum is 63.

The spelling of 78478586802 in words is "seventy-eight billion, four hundred seventy-eight million, five hundred eighty-six thousand, eight hundred two".