49513536221 has 2 divisors, whose sum is σ = 49513536222. Its totient is φ = 49513536220.

The previous prime is 49513536211. The next prime is 49513536227. The reversal of 49513536221 is 12263531594.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48721732900 + 791803321 = 220730^2 + 28139^2 .

It is a cyclic number.

It is not a de Polignac number, because 49513536221 - 2⁶ = 49513536157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49513536227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24756768110 + 24756768111.

It is an arithmetic number, because the mean of its divisors is an integer number (24756768111).

Almost surely, 2^49513536221 is an apocalyptic number.

It is an amenable number.

49513536221 is a deficient number, since it is larger than the sum of its proper divisors (1).

49513536221 is an equidigital number, since it uses as much as digits as its factorization.

49513536221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 194400, while the sum is 41.

The spelling of 49513536221 in words is "forty-nine billion, five hundred thirteen million, five hundred thirty-six thousand, two hundred twenty-one".