49091303081 has 2 divisors, whose sum is σ = 49091303082. Its totient is φ = 49091303080.

The previous prime is 49091303059. The next prime is 49091303111. The reversal of 49091303081 is 18030319094.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33370155625 + 15721147456 = 182675^2 + 125384^2 .

It is a cyclic number.

It is not a de Polignac number, because 49091303081 - 2³⁰ = 48017561257 is a prime.

It is a super-2 number, since 2×49091303081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (49091303281) 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, 24545651540 + 24545651541.

It is an arithmetic number, because the mean of its divisors is an integer number (24545651541).

Almost surely, 2^49091303081 is an apocalyptic number.

It is an amenable number.

49091303081 is a deficient number, since it is larger than the sum of its proper divisors (1).

49091303081 is an equidigital number, since it uses as much as digits as its factorization.

49091303081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 38.

The spelling of 49091303081 in words is "forty-nine billion, ninety-one million, three hundred three thousand, eighty-one".