19387872352663 has 2 divisors, whose sum is σ = 19387872352664. Its totient is φ = 19387872352662.

The previous prime is 19387872352657. The next prime is 19387872352733. The reversal of 19387872352663 is 36625327878391.

It is a happy number.

It is an a-pointer prime, because the next prime (19387872352733) can be obtained adding 19387872352663 to its sum of digits (70).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19387872352663 - 2¹⁷ = 19387872221591 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19387872352592 and 19387872352601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19387872352603) 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, 9693936176331 + 9693936176332.

It is an arithmetic number, because the mean of its divisors is an integer number (9693936176332).

Almost surely, 2^{19387872352663} is an apocalyptic number.

19387872352663 is a deficient number, since it is larger than the sum of its proper divisors (1).

19387872352663 is an equidigital number, since it uses as much as digits as its factorization.

19387872352663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 548674560, while the sum is 70.

The spelling of 19387872352663 in words is "nineteen trillion, three hundred eighty-seven billion, eight hundred seventy-two million, three hundred fifty-two thousand, six hundred sixty-three".