7446861664937 has 2 divisors, whose sum is σ = 7446861664938. Its totient is φ = 7446861664936.

The previous prime is 7446861664903. The next prime is 7446861664999. The reversal of 7446861664937 is 7394661686447.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4686116585536 + 2760745079401 = 2164744^2 + 1661549^2 .

It is a cyclic number.

It is not a de Polignac number, because 7446861664937 - 2¹² = 7446861660841 is a prime.

It is not a weakly prime, because it can be changed into another prime (7446861664037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3723430832468 + 3723430832469.

It is an arithmetic number, because the mean of its divisors is an integer number (3723430832469).

Almost surely, 2^{7446861664937} is an apocalyptic number.

It is an amenable number.

7446861664937 is a deficient number, since it is larger than the sum of its proper divisors (1).

7446861664937 is an equidigital number, since it uses as much as digits as its factorization.

7446861664937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 877879296, while the sum is 71.

The spelling of 7446861664937 in words is "seven trillion, four hundred forty-six billion, eight hundred sixty-one million, six hundred sixty-four thousand, nine hundred thirty-seven".