63436063391 has 2 divisors, whose sum is σ = 63436063392. Its totient is φ = 63436063390.

The previous prime is 63436063387. The next prime is 63436063409. The reversal of 63436063391 is 19336063436.

63436063391 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 is a cyclic number.

It is not a de Polignac number, because 63436063391 - 2² = 63436063387 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63436063321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31718031695 + 31718031696.

It is an arithmetic number, because the mean of its divisors is an integer number (31718031696).

Almost surely, 2^63436063391 is an apocalyptic number.

63436063391 is a deficient number, since it is larger than the sum of its proper divisors (1).

63436063391 is an equidigital number, since it uses as much as digits as its factorization.

63436063391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 629856, while the sum is 44.

The spelling of 63436063391 in words is "sixty-three billion, four hundred thirty-six million, sixty-three thousand, three hundred ninety-one".