49961637449 has 2 divisors, whose sum is σ = 49961637450. Its totient is φ = 49961637448.

The previous prime is 49961637409. The next prime is 49961637463. The reversal of 49961637449 is 94473616994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39534164224 + 10427473225 = 198832^2 + 102115^2 .

It is a cyclic number.

It is not a de Polignac number, because 49961637449 - 2²⁴ = 49944860233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 49961637391 and 49961637400.

It is not a weakly prime, because it can be changed into another prime (49961637409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24980818724 + 24980818725.

It is an arithmetic number, because the mean of its divisors is an integer number (24980818725).

Almost surely, 2^49961637449 is an apocalyptic number.

It is an amenable number.

49961637449 is a deficient number, since it is larger than the sum of its proper divisors (1).

49961637449 is an equidigital number, since it uses as much as digits as its factorization.

49961637449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35271936, while the sum is 62.

The spelling of 49961637449 in words is "forty-nine billion, nine hundred sixty-one million, six hundred thirty-seven thousand, four hundred forty-nine".