49638536873 has 2 divisors, whose sum is σ = 49638536874. Its totient is φ = 49638536872.

The previous prime is 49638536839. The next prime is 49638536939. The reversal of 49638536873 is 37863583694.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38358397609 + 11280139264 = 195853^2 + 106208^2 .

It is a cyclic number.

It is not a de Polignac number, because 49638536873 - 2²⁴ = 49621759657 is a prime.

It is a super-4 number, since 4×49638536873⁴ (a number of 44 digits) contains 4444 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (49638536833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24819268436 + 24819268437.

It is an arithmetic number, because the mean of its divisors is an integer number (24819268437).

Almost surely, 2^49638536873 is an apocalyptic number.

It is an amenable number.

49638536873 is a deficient number, since it is larger than the sum of its proper divisors (1).

49638536873 is an equidigital number, since it uses as much as digits as its factorization.

49638536873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78382080, while the sum is 62.

The spelling of 49638536873 in words is "forty-nine billion, six hundred thirty-eight million, five hundred thirty-six thousand, eight hundred seventy-three".