78827205744 has 120 divisors (see below), whose sum is σ = 253515461472. Its totient is φ = 22397575680.

The previous prime is 78827205739. The next prime is 78827205817. The reversal of 78827205744 is 44750272887.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 33579 + ... + 398474.

Almost surely, 2^78827205744 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 78827205744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126757730736).

78827205744 is an abundant number, since it is smaller than the sum of its proper divisors (174688255728).

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

78827205744 is a wasteful number, since it uses less digits than its factorization.

78827205744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432255 (or 432246 counting only the distinct ones).

The product of its (nonzero) digits is 7024640, while the sum is 54.

The spelling of 78827205744 in words is "seventy-eight billion, eight hundred twenty-seven million, two hundred five thousand, seven hundred forty-four".