49949488494991 has 2 divisors, whose sum is σ = 49949488494992. Its totient is φ = 49949488494990.

The previous prime is 49949488494977. The next prime is 49949488495063. The reversal of 49949488494991 is 19949488494994.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49949488494991 - 2⁵ = 49949488494959 is a prime.

It is a super-2 number, since 2×49949488494991² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 49949488494896 and 49949488494905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49949488494901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24974744247495 + 24974744247496.

It is an arithmetic number, because the mean of its divisors is an integer number (24974744247496).

Almost surely, 2^{49949488494991} is an apocalyptic number.

49949488494991 is a deficient number, since it is larger than the sum of its proper divisors (1).

49949488494991 is an equidigital number, since it uses as much as digits as its factorization.

49949488494991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34828517376, while the sum is 91.

The spelling of 49949488494991 in words is "forty-nine trillion, nine hundred forty-nine billion, four hundred eighty-eight million, four hundred ninety-four thousand, nine hundred ninety-one".