63431749741 has 2 divisors, whose sum is σ = 63431749742. Its totient is φ = 63431749740.

The previous prime is 63431749729. The next prime is 63431749747. The reversal of 63431749741 is 14794713436.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39822198025 + 23609551716 = 199555^2 + 153654^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63431749741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63431749747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31715874870 + 31715874871.

It is an arithmetic number, because the mean of its divisors is an integer number (31715874871).

Almost surely, 2^63431749741 is an apocalyptic number.

It is an amenable number.

63431749741 is a deficient number, since it is larger than the sum of its proper divisors (1).

63431749741 is an equidigital number, since it uses as much as digits as its factorization.

63431749741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1524096, while the sum is 49.

The spelling of 63431749741 in words is "sixty-three billion, four hundred thirty-one million, seven hundred forty-nine thousand, seven hundred forty-one".