49665687937 has 2 divisors, whose sum is σ = 49665687938. Its totient is φ = 49665687936.

The previous prime is 49665687923. The next prime is 49665687949. The reversal of 49665687937 is 73978656694.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42390280321 + 7275407616 = 205889^2 + 85296^2 .

It is a cyclic number.

It is not a de Polignac number, because 49665687937 - 2⁷ = 49665687809 is a prime.

It is not a weakly prime, because it can be changed into another prime (49665687437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24832843968 + 24832843969.

It is an arithmetic number, because the mean of its divisors is an integer number (24832843969).

Almost surely, 2^49665687937 is an apocalyptic number.

It is an amenable number.

49665687937 is a deficient number, since it is larger than the sum of its proper divisors (1).

49665687937 is an equidigital number, since it uses as much as digits as its factorization.

49665687937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 411505920, while the sum is 70.

The spelling of 49665687937 in words is "forty-nine billion, six hundred sixty-five million, six hundred eighty-seven thousand, nine hundred thirty-seven".