48781678249 has 2 divisors, whose sum is σ = 48781678250. Its totient is φ = 48781678248.

The previous prime is 48781678217. The next prime is 48781678291. The reversal of 48781678249 is 94287618784.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31840833600 + 16940844649 = 178440^2 + 130157^2 .

It is a cyclic number.

It is not a de Polignac number, because 48781678249 - 2⁵ = 48781678217 is a prime.

It is not a weakly prime, because it can be changed into another prime (48781679249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24390839124 + 24390839125.

It is an arithmetic number, because the mean of its divisors is an integer number (24390839125).

Almost surely, 2^48781678249 is an apocalyptic number.

It is an amenable number.

48781678249 is a deficient number, since it is larger than the sum of its proper divisors (1).

48781678249 is an equidigital number, since it uses as much as digits as its factorization.

48781678249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43352064, while the sum is 64.

The spelling of 48781678249 in words is "forty-eight billion, seven hundred eighty-one million, six hundred seventy-eight thousand, two hundred forty-nine".