19988351463 has 16 divisors (see below), whose sum is σ = 26993193696. Its totient is φ = 13155225600.

The previous prime is 19988351441. The next prime is 19988351507. The reversal of 19988351463 is 36415388991.

It is not a de Polignac number, because 19988351463 - 2¹⁰ = 19988350439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19988331463) 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, 31045 + ... + 202337.

It is an arithmetic number, because the mean of its divisors is an integer number (1687074606).

Almost surely, 2^19988351463 is an apocalyptic number.

19988351463 is a deficient number, since it is larger than the sum of its proper divisors (7004842233).

19988351463 is a wasteful number, since it uses less digits than its factorization.

19988351463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171794.

The product of its digits is 5598720, while the sum is 57.

The spelling of 19988351463 in words is "nineteen billion, nine hundred eighty-eight million, three hundred fifty-one thousand, four hundred sixty-three".