63781251463 has 2 divisors, whose sum is σ = 63781251464. Its totient is φ = 63781251462.

The previous prime is 63781251451. The next prime is 63781251473. The reversal of 63781251463 is 36415218736.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63781251463 - 2¹³ = 63781243271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63781251433) 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, 31890625731 + 31890625732.

It is an arithmetic number, because the mean of its divisors is an integer number (31890625732).

Almost surely, 2^63781251463 is an apocalyptic number.

63781251463 is a deficient number, since it is larger than the sum of its proper divisors (1).

63781251463 is an equidigital number, since it uses as much as digits as its factorization.

63781251463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 46.

The spelling of 63781251463 in words is "sixty-three billion, seven hundred eighty-one million, two hundred fifty-one thousand, four hundred sixty-three".