49857549877 has 2 divisors, whose sum is σ = 49857549878. Its totient is φ = 49857549876.

The previous prime is 49857549827. The next prime is 49857549919. The reversal of 49857549877 is 77894575894.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25179025041 + 24678524836 = 158679^2 + 157094^2 .

It is a cyclic number.

It is not a de Polignac number, because 49857549877 - 2²³ = 49849161269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49857549827) 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, 24928774938 + 24928774939.

It is an arithmetic number, because the mean of its divisors is an integer number (24928774939).

Almost surely, 2^49857549877 is an apocalyptic number.

It is an amenable number.

49857549877 is a deficient number, since it is larger than the sum of its proper divisors (1).

49857549877 is an equidigital number, since it uses as much as digits as its factorization.

49857549877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 711244800, while the sum is 73.

The spelling of 49857549877 in words is "forty-nine billion, eight hundred fifty-seven million, five hundred forty-nine thousand, eight hundred seventy-seven".