19968849064 has 64 divisors (see below), whose sum is σ = 39951360000. Its totient is φ = 9330406848.

The previous prime is 19968848981. The next prime is 19968849079. The reversal of 19968849064 is 46094886991.

It is a junction number, because it is equal to n+sod(n) for n = 19968848987 and 19968849005.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3452527 + ... + 3458305.

It is an arithmetic number, because the mean of its divisors is an integer number (624240000).

Almost surely, 2^19968849064 is an apocalyptic number.

It is an amenable number.

19968849064 is an abundant number, since it is smaller than the sum of its proper divisors (19982510936).

19968849064 is a wasteful number, since it uses less digits than its factorization.

19968849064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6110 (or 6106 counting only the distinct ones).

The product of its (nonzero) digits is 26873856, while the sum is 64.

The spelling of 19968849064 in words is "nineteen billion, nine hundred sixty-eight million, eight hundred forty-nine thousand, sixty-four".