49755791909 has 2 divisors, whose sum is σ = 49755791910. Its totient is φ = 49755791908.

The previous prime is 49755791893. The next prime is 49755791971. The reversal of 49755791909 is 90919755794.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43617069409 + 6138722500 = 208847^2 + 78350^2 .

It is a cyclic number.

It is not a de Polignac number, because 49755791909 - 2⁴ = 49755791893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49755791999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24877895954 + 24877895955.

It is an arithmetic number, because the mean of its divisors is an integer number (24877895955).

Almost surely, 2^49755791909 is an apocalyptic number.

It is an amenable number.

49755791909 is a deficient number, since it is larger than the sum of its proper divisors (1).

49755791909 is an equidigital number, since it uses as much as digits as its factorization.

49755791909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32148900, while the sum is 65.

The spelling of 49755791909 in words is "forty-nine billion, seven hundred fifty-five million, seven hundred ninety-one thousand, nine hundred nine".