63444753461 has 2 divisors, whose sum is σ = 63444753462. Its totient is φ = 63444753460.

The previous prime is 63444753439. The next prime is 63444753487. The reversal of 63444753461 is 16435744436.

63444753461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55684200625 + 7760552836 = 235975^2 + 88094^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63444753461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63444756461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31722376730 + 31722376731.

It is an arithmetic number, because the mean of its divisors is an integer number (31722376731).

Almost surely, 2^63444753461 is an apocalyptic number.

It is an amenable number.

63444753461 is a deficient number, since it is larger than the sum of its proper divisors (1).

63444753461 is an equidigital number, since it uses as much as digits as its factorization.

63444753461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 47.

The spelling of 63444753461 in words is "sixty-three billion, four hundred forty-four million, seven hundred fifty-three thousand, four hundred sixty-one".