19988559652 has 12 divisors (see below), whose sum is σ = 34996787056. Its totient is φ = 9989477640.

The previous prime is 19988559623. The next prime is 19988559707. The reversal of 19988559652 is 25695588991.

It is a happy number.

It is a super-2 number, since 2×19988559652² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1191174 + ... + 1207837.

Almost surely, 2^19988559652 is an apocalyptic number.

It is an amenable number.

19988559652 is a deficient number, since it is larger than the sum of its proper divisors (15008227404).

19988559652 is a wasteful number, since it uses less digits than its factorization.

19988559652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2401098 (or 2401096 counting only the distinct ones).

The product of its digits is 69984000, while the sum is 67.

The spelling of 19988559652 in words is "nineteen billion, nine hundred eighty-eight million, five hundred fifty-nine thousand, six hundred fifty-two".