19713634463 has 2 divisors, whose sum is σ = 19713634464. Its totient is φ = 19713634462.

The previous prime is 19713634453. The next prime is 19713634481. The reversal of 19713634463 is 36443631791.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19713634463 - 2⁸ = 19713634207 is a prime.

It is a super-3 number, since 3×19713634463³ (a number of 32 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19713634453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9856817231 + 9856817232.

It is an arithmetic number, because the mean of its divisors is an integer number (9856817232).

Almost surely, 2^19713634463 is an apocalyptic number.

19713634463 is a deficient number, since it is larger than the sum of its proper divisors (1).

19713634463 is an equidigital number, since it uses as much as digits as its factorization.

19713634463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 979776, while the sum is 47.

The spelling of 19713634463 in words is "nineteen billion, seven hundred thirteen million, six hundred thirty-four thousand, four hundred sixty-three".