49342648637 has 2 divisors, whose sum is σ = 49342648638. Its totient is φ = 49342648636.

The previous prime is 49342648613. The next prime is 49342648657. The reversal of 49342648637 is 73684624394.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46670689156 + 2671959481 = 216034^2 + 51691^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49342648637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49342648657) 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, 24671324318 + 24671324319.

It is an arithmetic number, because the mean of its divisors is an integer number (24671324319).

Almost surely, 2^49342648637 is an apocalyptic number.

It is an amenable number.

49342648637 is a deficient number, since it is larger than the sum of its proper divisors (1).

49342648637 is an equidigital number, since it uses as much as digits as its factorization.

49342648637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20901888, while the sum is 56.

The spelling of 49342648637 in words is "forty-nine billion, three hundred forty-two million, six hundred forty-eight thousand, six hundred thirty-seven".