49749793813 has 2 divisors, whose sum is σ = 49749793814. Its totient is φ = 49749793812.

The previous prime is 49749793789. The next prime is 49749793853. The reversal of 49749793813 is 31839794794.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49216091409 + 533702404 = 221847^2 + 23102^2 .

It is a cyclic number.

It is not a de Polignac number, because 49749793813 - 2²⁹ = 49212922901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49749793853) 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, 24874896906 + 24874896907.

It is an arithmetic number, because the mean of its divisors is an integer number (24874896907).

Almost surely, 2^49749793813 is an apocalyptic number.

It is an amenable number.

49749793813 is a deficient number, since it is larger than the sum of its proper divisors (1).

49749793813 is an equidigital number, since it uses as much as digits as its factorization.

49749793813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41150592, while the sum is 64.

The spelling of 49749793813 in words is "forty-nine billion, seven hundred forty-nine million, seven hundred ninety-three thousand, eight hundred thirteen".