49856704637 has 2 divisors, whose sum is σ = 49856704638. Its totient is φ = 49856704636.

The previous prime is 49856704529. The next prime is 49856704693. The reversal of 49856704637 is 73640765894.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42605500921 + 7251203716 = 206411^2 + 85154^2 .

It is a cyclic number.

It is not a de Polignac number, because 49856704637 - 2²⁰ = 49855656061 is a prime.

It is a super-2 number, since 2×49856704637² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49856704237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24928352318 + 24928352319.

It is an arithmetic number, because the mean of its divisors is an integer number (24928352319).

Almost surely, 2^49856704637 is an apocalyptic number.

It is an amenable number.

49856704637 is a deficient number, since it is larger than the sum of its proper divisors (1).

49856704637 is an equidigital number, since it uses as much as digits as its factorization.

49856704637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30481920, while the sum is 59.

The spelling of 49856704637 in words is "forty-nine billion, eight hundred fifty-six million, seven hundred four thousand, six hundred thirty-seven".