49055937781 has 2 divisors, whose sum is σ = 49055937782. Its totient is φ = 49055937780.

The previous prime is 49055937751. The next prime is 49055937839. The reversal of 49055937781 is 18773955094.

It is an a-pointer prime, because the next prime (49055937839) can be obtained adding 49055937781 to its sum of digits (58).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37733062500 + 11322875281 = 194250^2 + 106409^2 .

It is a cyclic number.

It is not a de Polignac number, because 49055937781 - 2¹⁹ = 49055413493 is a prime.

It is a super-2 number, since 2×49055937781² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49055937751) 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, 24527968890 + 24527968891.

It is an arithmetic number, because the mean of its divisors is an integer number (24527968891).

Almost surely, 2^49055937781 is an apocalyptic number.

It is an amenable number.

49055937781 is a deficient number, since it is larger than the sum of its proper divisors (1).

49055937781 is an equidigital number, since it uses as much as digits as its factorization.

49055937781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9525600, while the sum is 58.

The spelling of 49055937781 in words is "forty-nine billion, fifty-five million, nine hundred thirty-seven thousand, seven hundred eighty-one".