49941577727989 has 2 divisors, whose sum is σ = 49941577727990. Its totient is φ = 49941577727988.

The previous prime is 49941577727953. The next prime is 49941577728011. The reversal of 49941577727989 is 98972777514994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33427245456900 + 16514332271089 = 5781630^2 + 4063783^2 .

It is a cyclic number.

It is not a de Polignac number, because 49941577727989 - 2¹⁵ = 49941577695221 is a prime.

It is a super-2 number, since 2×49941577727989² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49941577722989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (37) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24970788863994 + 24970788863995.

It is an arithmetic number, because the mean of its divisors is an integer number (24970788863995).

Almost surely, 2^{49941577727989} is an apocalyptic number.

It is an amenable number.

49941577727989 is a deficient number, since it is larger than the sum of its proper divisors (1).

49941577727989 is an equidigital number, since it uses as much as digits as its factorization.

49941577727989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20163790080, while the sum is 88.

The spelling of 49941577727989 in words is "forty-nine trillion, nine hundred forty-one billion, five hundred seventy-seven million, seven hundred twenty-seven thousand, nine hundred eighty-nine".