63421999463 has 2 divisors, whose sum is σ = 63421999464. Its totient is φ = 63421999462.

The previous prime is 63421999453. The next prime is 63421999493. The reversal of 63421999463 is 36499912436.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63421999463 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63421999399 and 63421999408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63421999453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31710999731 + 31710999732.

It is an arithmetic number, because the mean of its divisors is an integer number (31710999732).

Almost surely, 2^63421999463 is an apocalyptic number.

63421999463 is a deficient number, since it is larger than the sum of its proper divisors (1).

63421999463 is an equidigital number, since it uses as much as digits as its factorization.

63421999463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7558272, while the sum is 56.

The spelling of 63421999463 in words is "sixty-three billion, four hundred twenty-one million, nine hundred ninety-nine thousand, four hundred sixty-three".