19655596868 has 12 divisors (see below), whose sum is σ = 34405658112. Its totient is φ = 9825408840.

The previous prime is 19655596861. The next prime is 19655596897. The reversal of 19655596868 is 86869555691.

It is a junction number, because it is equal to n+sod(n) for n = 19655596798 and 19655596807.

It is not an unprimeable number, because it can be changed into a prime (19655596861) 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, 578828 + ... + 611843.

It is an arithmetic number, because the mean of its divisors is an integer number (2867138176).

Almost surely, 2^19655596868 is an apocalyptic number.

It is an amenable number.

19655596868 is a deficient number, since it is larger than the sum of its proper divisors (14750061244).

19655596868 is a wasteful number, since it uses less digits than its factorization.

19655596868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194802 (or 1194800 counting only the distinct ones).

The product of its digits is 139968000, while the sum is 68.

The spelling of 19655596868 in words is "nineteen billion, six hundred fifty-five million, five hundred ninety-six thousand, eight hundred sixty-eight".