48628720681 has 2 divisors, whose sum is σ = 48628720682. Its totient is φ = 48628720680.

The previous prime is 48628720663. The next prime is 48628720687. The reversal of 48628720681 is 18602782684.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48613635225 + 15085456 = 220485^2 + 3884^2 .

It is a cyclic number.

It is not a de Polignac number, because 48628720681 - 2⁹ = 48628720169 is a prime.

It is a super-2 number, since 2×48628720681² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (48628720687) by changing a digit.

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 as a sum of consecutive naturals, namely, 24314360340 + 24314360341.

It is an arithmetic number, because the mean of its divisors is an integer number (24314360341).

Almost surely, 2^48628720681 is an apocalyptic number.

It is an amenable number.

48628720681 is a deficient number, since it is larger than the sum of its proper divisors (1).

48628720681 is an equidigital number, since it uses as much as digits as its factorization.

48628720681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2064384, while the sum is 52.

The spelling of 48628720681 in words is "forty-eight billion, six hundred twenty-eight million, seven hundred twenty thousand, six hundred eighty-one".