19963315479 has 16 divisors (see below), whose sum is σ = 27369107840. Its totient is φ = 12934041120.

The previous prime is 19963315399. The next prime is 19963315499. The reversal of 19963315479 is 97451336991.

It is not a de Polignac number, because 19963315479 - 2⁸ = 19963315223 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19963315499) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9337 + ... + 200034.

It is an arithmetic number, because the mean of its divisors is an integer number (1710569240).

Almost surely, 2^19963315479 is an apocalyptic number.

19963315479 is a deficient number, since it is larger than the sum of its proper divisors (7405792361).

19963315479 is a wasteful number, since it uses less digits than its factorization.

19963315479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210270.

The product of its digits is 5511240, while the sum is 57.

The spelling of 19963315479 in words is "nineteen billion, nine hundred sixty-three million, three hundred fifteen thousand, four hundred seventy-nine".