19559961104 has 20 divisors (see below), whose sum is σ = 37927002576. Its totient is φ = 9772347552.

The previous prime is 19559961101. The next prime is 19559961149. The reversal of 19559961104 is 40116995591.

It is not an unprimeable number, because it can be changed into a prime (19559961101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 455894 + ... + 496949.

Almost surely, 2^19559961104 is an apocalyptic number.

It is an amenable number.

19559961104 is a deficient number, since it is larger than the sum of its proper divisors (18367041472).

19559961104 is a wasteful number, since it uses less digits than its factorization.

19559961104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954134 (or 954128 counting only the distinct ones).

The product of its (nonzero) digits is 437400, while the sum is 50.

The spelling of 19559961104 in words is "nineteen billion, five hundred fifty-nine million, nine hundred sixty-one thousand, one hundred four".