49681434961 has 2 divisors, whose sum is σ = 49681434962. Its totient is φ = 49681434960.

The previous prime is 49681434937. The next prime is 49681435031. The reversal of 49681434961 is 16943418694.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42107040000 + 7574394961 = 205200^2 + 87031^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49681434961 is a prime.

It is not a weakly prime, because it can be changed into another prime (49681434911) 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, 24840717480 + 24840717481.

It is an arithmetic number, because the mean of its divisors is an integer number (24840717481).

Almost surely, 2^49681434961 is an apocalyptic number.

It is an amenable number.

49681434961 is a deficient number, since it is larger than the sum of its proper divisors (1).

49681434961 is an equidigital number, since it uses as much as digits as its factorization.

49681434961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4478976, while the sum is 55.

The spelling of 49681434961 in words is "forty-nine billion, six hundred eighty-one million, four hundred thirty-four thousand, nine hundred sixty-one".