48781678291 has 2 divisors, whose sum is σ = 48781678292. Its totient is φ = 48781678290.

The previous prime is 48781678249. The next prime is 48781678433. The reversal of 48781678291 is 19287618784.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-48781678291 is a prime.

It is not a weakly prime, because it can be changed into another prime (48781675291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24390839145 + 24390839146.

It is an arithmetic number, because the mean of its divisors is an integer number (24390839146).

Almost surely, 2^48781678291 is an apocalyptic number.

48781678291 is a deficient number, since it is larger than the sum of its proper divisors (1).

48781678291 is an equidigital number, since it uses as much as digits as its factorization.

48781678291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10838016, while the sum is 61.

The spelling of 48781678291 in words is "forty-eight billion, seven hundred eighty-one million, six hundred seventy-eight thousand, two hundred ninety-one".