49557471839 has 2 divisors, whose sum is σ = 49557471840. Its totient is φ = 49557471838.

The previous prime is 49557471833. The next prime is 49557471857. The reversal of 49557471839 is 93817475594.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49557471839 - 2³² = 45262504543 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49557471833) 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, 24778735919 + 24778735920.

It is an arithmetic number, because the mean of its divisors is an integer number (24778735920).

Almost surely, 2^49557471839 is an apocalyptic number.

49557471839 is a deficient number, since it is larger than the sum of its proper divisors (1).

49557471839 is an equidigital number, since it uses as much as digits as its factorization.

49557471839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38102400, while the sum is 62.

The spelling of 49557471839 in words is "forty-nine billion, five hundred fifty-seven million, four hundred seventy-one thousand, eight hundred thirty-nine".