78005280852 has 24 divisors (see below), whose sum is σ = 202235913600. Its totient is φ = 26001760248.

The previous prime is 78005280851. The next prime is 78005280853. The reversal of 78005280852 is 25808250087.

78005280852 is a `hidden beast` number, since 78 + 0 + 0 + 528 + 0 + 8 + 52 = 666.

It is an interprime number because it is at equal distance from previous prime (78005280851) and next prime (78005280853).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 78005280798 and 78005280807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78005280851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361135452 + ... + 361135667.

It is an arithmetic number, because the mean of its divisors is an integer number (8426496400).

Almost surely, 2^78005280852 is an apocalyptic number.

It is an amenable number.

78005280852 is an abundant number, since it is smaller than the sum of its proper divisors (124230632748).

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

78005280852 is a wasteful number, since it uses less digits than its factorization.

78005280852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722271132 (or 722271124 counting only the distinct ones).

The product of its (nonzero) digits is 358400, while the sum is 45.

The spelling of 78005280852 in words is "seventy-eight billion, five million, two hundred eighty thousand, eight hundred fifty-two".