49876654549 has 2 divisors, whose sum is σ = 49876654550. Its totient is φ = 49876654548.

The previous prime is 49876654543. The next prime is 49876654559. The reversal of 49876654549 is 94545667894.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47516152324 + 2360502225 = 217982^2 + 48585^2 .

It is a cyclic number.

It is not a de Polignac number, because 49876654549 - 2¹⁹ = 49876130261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49876654543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24938327274 + 24938327275.

It is an arithmetic number, because the mean of its divisors is an integer number (24938327275).

Almost surely, 2^49876654549 is an apocalyptic number.

It is an amenable number.

49876654549 is a deficient number, since it is larger than the sum of its proper divisors (1).

49876654549 is an equidigital number, since it uses as much as digits as its factorization.

49876654549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 261273600, while the sum is 67.

The spelling of 49876654549 in words is "forty-nine billion, eight hundred seventy-six million, six hundred fifty-four thousand, five hundred forty-nine".