49563974659721 has 2 divisors, whose sum is σ = 49563974659722. Its totient is φ = 49563974659720.

The previous prime is 49563974659637. The next prime is 49563974659783. The reversal of 49563974659721 is 12795647936594.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46871549838400 + 2692424821321 = 6846280^2 + 1640861^2 .

It is a cyclic number.

It is not a de Polignac number, because 49563974659721 - 2¹⁸ = 49563974397577 is a prime.

It is not a weakly prime, because it can be changed into another prime (49563974689721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24781987329860 + 24781987329861.

It is an arithmetic number, because the mean of its divisors is an integer number (24781987329861).

Almost surely, 2^{49563974659721} is an apocalyptic number.

It is an amenable number.

49563974659721 is a deficient number, since it is larger than the sum of its proper divisors (1).

49563974659721 is an equidigital number, since it uses as much as digits as its factorization.

49563974659721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3086294400, while the sum is 77.

The spelling of 49563974659721 in words is "forty-nine trillion, five hundred sixty-three billion, nine hundred seventy-four million, six hundred fifty-nine thousand, seven hundred twenty-one".