63476401126661 has 2 divisors, whose sum is σ = 63476401126662. Its totient is φ = 63476401126660.

The previous prime is 63476401126651. The next prime is 63476401126679. The reversal of 63476401126661 is 16662110467436.

63476401126661 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., 35997900030625 + 27478501096036 = 5999825^2 + 5241994^2 .

It is a cyclic number.

It is not a de Polignac number, because 63476401126661 - 2¹⁸ = 63476400864517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63476401126631) 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, 31738200563330 + 31738200563331.

It is an arithmetic number, because the mean of its divisors is an integer number (31738200563331).

Almost surely, 2^{63476401126661} is an apocalyptic number.

It is an amenable number.

63476401126661 is a deficient number, since it is larger than the sum of its proper divisors (1).

63476401126661 is an equidigital number, since it uses as much as digits as its factorization.

63476401126661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5225472, while the sum is 53.

The spelling of 63476401126661 in words is "sixty-three trillion, four hundred seventy-six billion, four hundred one million, one hundred twenty-six thousand, six hundred sixty-one".