78873247205 has 8 divisors (see below), whose sum is σ = 97911617400. Its totient is φ = 60922783936.

The previous prime is 78873247181. The next prime is 78873247231. The reversal of 78873247205 is 50274237887.

It can be written as a sum of positive squares in 4 ways, for example, as 31524357601 + 47348889604 = 177551^2 + 217598^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78873247205 is a prime.

It is a super-2 number, since 2×78873247205² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271976570 + ... + 271976859.

It is an arithmetic number, because the mean of its divisors is an integer number (12238952175).

Almost surely, 2^78873247205 is an apocalyptic number.

It is an amenable number.

78873247205 is a deficient number, since it is larger than the sum of its proper divisors (19038370195).

78873247205 is a wasteful number, since it uses less digits than its factorization.

78873247205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543953463.

The product of its (nonzero) digits is 5268480, while the sum is 53.

The spelling of 78873247205 in words is "seventy-eight billion, eight hundred seventy-three million, two hundred forty-seven thousand, two hundred five".