78845885240 has 32 divisors (see below), whose sum is σ = 178303783680. Its totient is φ = 31378257792.

The previous prime is 78845885213. The next prime is 78845885249. The reversal of 78845885240 is 4258854887.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 78845885240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78845885249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4995032 + ... + 5010791.

It is an arithmetic number, because the mean of its divisors is an integer number (5571993240).

Almost surely, 2^78845885240 is an apocalyptic number.

It is an amenable number.

78845885240 is an abundant number, since it is smaller than the sum of its proper divisors (99457898440).

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

78845885240 is a wasteful number, since it uses less digits than its factorization.

78845885240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10006031 (or 10006027 counting only the distinct ones).

The product of its (nonzero) digits is 22937600, while the sum is 59.

The spelling of 78845885240 in words is "seventy-eight billion, eight hundred forty-five million, eight hundred eighty-five thousand, two hundred forty".