78648765242 has 8 divisors (see below), whose sum is σ = 117996057396. Its totient is φ = 39316746112.

The previous prime is 78648765227. The next prime is 78648765253. The reversal of 78648765242 is 24256784687.

It can be written as a sum of positive squares in 2 ways, for example, as 71947869361 + 6700895881 = 268231^2 + 81859^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3805373 + ... + 3825984.

Almost surely, 2^78648765242 is an apocalyptic number.

78648765242 is a deficient number, since it is larger than the sum of its proper divisors (39347292154).

78648765242 is a wasteful number, since it uses less digits than its factorization.

78648765242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7636512.

The product of its digits is 36126720, while the sum is 59.

The spelling of 78648765242 in words is "seventy-eight billion, six hundred forty-eight million, seven hundred sixty-five thousand, two hundred forty-two".