49939836922649 has 2 divisors, whose sum is σ = 49939836922650. Its totient is φ = 49939836922648.

The previous prime is 49939836922627. The next prime is 49939836922681. The reversal of 49939836922649 is 94622963893994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35611772353600 + 14328064569049 = 5967560^2 + 3785243^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49939836922649 is a prime.

It is not a weakly prime, because it can be changed into another prime (49939836922049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24969918461324 + 24969918461325.

It is an arithmetic number, because the mean of its divisors is an integer number (24969918461325).

Almost surely, 2^{49939836922649} is an apocalyptic number.

It is an amenable number.

49939836922649 is a deficient number, since it is larger than the sum of its proper divisors (1).

49939836922649 is an equidigital number, since it uses as much as digits as its factorization.

49939836922649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9795520512, while the sum is 83.

The spelling of 49939836922649 in words is "forty-nine trillion, nine hundred thirty-nine billion, eight hundred thirty-six million, nine hundred twenty-two thousand, six hundred forty-nine".